diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
index b7eb05f..22826a3 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
@@ -1967,10 +1967,8 @@
 }
 void CPDF_Creator::Clear()
 {
-    if (m_pXRefStream) {
-        delete m_pXRefStream;
-        m_pXRefStream = NULL;
-    }
+    delete m_pXRefStream;
+    m_pXRefStream = NULL;
     m_File.Clear();
     m_NewObjNumArray.RemoveAll();
     if (m_pIDArray) {
@@ -2068,7 +2066,7 @@
             CFX_ByteString user_pass = m_pParser->GetPassword();
             FX_DWORD flag = PDF_ENCRYPT_CONTENT;
             handler.OnCreate(m_pEncryptDict, m_pIDArray, (const uint8_t*)user_pass, user_pass.GetLength(), flag);
-            if (m_pCryptoHandler && m_bNewCrypto) {
+            if (m_bNewCrypto) {
                 delete m_pCryptoHandler;
             }
             m_pCryptoHandler = new CPDF_StandardCryptoHandler;
@@ -2122,7 +2120,7 @@
 }
 void CPDF_Creator::ResetStandardSecurity()
 {
-    if ((m_bStandardSecurity || m_bNewCrypto) && m_pCryptoHandler) {
+    if (m_bStandardSecurity || m_bNewCrypto) {
         delete m_pCryptoHandler;
         m_pCryptoHandler = NULL;
     }
diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
index 784fc01..2db8d60 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_doc.cpp
@@ -1044,9 +1044,7 @@
             }
         }
     }
-    if (pEncoding) {
-        delete pEncoding;
-    }
+    delete pEncoding;
     pFontDesc->SetAtInteger("StemV", nStemV);
     AddIndirectObject(pFontDesc);
     pFontDict->SetAtReference("FontDescriptor", this, pFontDesc);
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
index 14207f7..e7072e8 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
@@ -1744,10 +1744,6 @@
 }
 CPDF_Type3Char::~CPDF_Type3Char()
 {
-    if (m_pForm) {
-        delete m_pForm;
-    }
-    if (m_pBitmap) {
-        delete m_pBitmap;
-    }
+    delete m_pForm;
+    delete m_pBitmap;
 }
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
index 0b4064b..7dd019d 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
@@ -300,9 +300,7 @@
     if (m_pLeadingBytes) {
         FX_Free(m_pLeadingBytes);
     }
-    if (m_pUseMap) {
-        delete m_pUseMap;
-    }
+    delete m_pUseMap;
 }
 void CPDF_CMap::Release()
 {
@@ -710,15 +708,9 @@
     if (m_pAnsiWidths) {
         FX_Free(m_pAnsiWidths);
     }
-    if (m_pAllocatedCMap) {
-        delete m_pAllocatedCMap;
-    }
-    if (m_pCIDToGIDMap) {
-        delete m_pCIDToGIDMap;
-    }
-    if (m_pTTGSUBTable) {
-        delete m_pTTGSUBTable;
-    }
+    delete m_pAllocatedCMap;
+    delete m_pCIDToGIDMap;
+    delete m_pTTGSUBTable;
 }
 FX_WORD CPDF_CIDFont::CIDFromCharCode(FX_DWORD charcode) const
 {
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.h b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
index 69ccc3e..1b18f82 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.h
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
@@ -282,9 +282,7 @@
         }
         ~TSingleSubstFormat1()
         {
-            if(Coverage) {
-                delete Coverage;
-            }
+            delete Coverage;
         }
     private:
         TSingleSubstFormat1(const TSingleSubstFormat1&);
@@ -300,12 +298,8 @@
         }
         ~TSingleSubstFormat2()
         {
-            if(Coverage) {
-                delete Coverage;
-            }
-            if(Substitute) {
-                delete[] Substitute;
-            }
+            delete Coverage;
+            delete[] Substitute;
         }
     private:
         TSingleSubstFormat2(const TSingleSubstFormat2&);
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
index 85c785f..db3966e 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
@@ -697,9 +697,7 @@
 }
 CPDF_FormObject::~CPDF_FormObject()
 {
-    if (m_pForm) {
-        delete m_pForm;
-    }
+    delete m_pForm;
 }
 void CPDF_FormObject::Transform(const CFX_AffineMatrix& matrix)
 {
@@ -709,9 +707,7 @@
 void CPDF_FormObject::CopyData(const CPDF_PageObject* pSrc)
 {
     const CPDF_FormObject* pSrcObj = (const CPDF_FormObject*)pSrc;
-    if (m_pForm) {
-        delete m_pForm;
-    }
+    delete m_pForm;
     m_pForm = pSrcObj->m_pForm->Clone();
     m_FormMatrix = pSrcObj->m_FormMatrix;
 }
@@ -735,9 +731,7 @@
 }
 CPDF_PageObjects::~CPDF_PageObjects()
 {
-    if (m_pParser) {
-        delete m_pParser;
-    }
+    delete m_pParser;
     if (!m_bReleaseMembers) {
         return;
     }
@@ -851,9 +845,7 @@
 void CPDF_PageObjects::ClearCacheObjects()
 {
     m_ParseState = PDF_CONTENT_NOT_PARSED;
-    if (m_pParser) {
-        delete m_pParser;
-    }
+    delete m_pParser;
     m_pParser = NULL;
     if (m_bReleaseMembers) {
         FX_POSITION pos = m_ObjectList.GetHeadPosition();
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
index 1146d76..0ee7a0d 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
@@ -930,9 +930,7 @@
     if (m_pAltCS) {
         m_pAltCS->ReleaseCS();
     }
-    if (m_pFunc) {
-        delete m_pFunc;
-    }
+    delete m_pFunc;
 }
 void CPDF_SeparationCS::GetDefaultValue(int iComponent, FX_FLOAT& value, FX_FLOAT& min, FX_FLOAT& max) const
 {
@@ -1020,9 +1018,7 @@
 };
 CPDF_DeviceNCS::~CPDF_DeviceNCS()
 {
-    if (m_pFunc) {
-        delete m_pFunc;
-    }
+    delete m_pFunc;
     if (m_pAltCS) {
         m_pAltCS->ReleaseCS();
     }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
index 6362be9..f115b67 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
@@ -460,9 +460,7 @@
 }
 CPDF_SampledFunc::~CPDF_SampledFunc()
 {
-    if (m_pSampleStream) {
-        delete m_pSampleStream;
-    }
+    delete m_pSampleStream;
     if (m_pEncodeInfo) {
         FX_Free(m_pEncodeInfo);
     }
@@ -713,9 +711,7 @@
 CPDF_StitchFunc::~CPDF_StitchFunc()
 {
     for (int i = 0; i < m_nSubs; i ++)
-        if (m_pSubFunctions[i]) {
-            delete m_pSubFunctions[i];
-        }
+        delete m_pSubFunctions[i];
     if (m_pSubFunctions) {
         FX_Free(m_pSubFunctions);
     }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
index e2d075e..70d0743 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
@@ -38,9 +38,7 @@
         FX_Free(m_pTypeList);
     }
     for (i = m_TextCount - 1; i > -1; i --)
-        if (m_pTextList[i]) {
-            delete m_pTextList[i];
-        }
+        delete m_pTextList[i];
     if (m_pTextList) {
         FX_Free(m_pTextList);
     }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
index 5f4023a..fdc4a27 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
@@ -44,9 +44,7 @@
     if (m_pPathPoints) {
         FX_Free(m_pPathPoints);
     }
-    if (m_pCurStates) {
-        delete m_pCurStates;
-    }
+    delete m_pCurStates;
     if (m_pLastImageDict) {
         m_pLastImageDict->Release();
     }
@@ -801,9 +799,7 @@
     if (m_pCurStates->m_TextState.GetObject()->m_TextMode < 4) {
         for (int i = 0; i < count; i ++) {
             CPDF_TextObject* pText = (CPDF_TextObject*)m_ClipTextList.GetAt(i);
-            if (pText) {
-                delete pText;
-            }
+            delete pText;
         }
     } else {
         m_pCurStates->m_ClipPath.AppendTexts((CPDF_TextObject**)m_ClipTextList.GetData(), count);
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 6f09969..ff1f6c4 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -918,17 +918,11 @@
 }
 void CPDF_ContentParser::Clear()
 {
-    if (m_pParser) {
-        delete m_pParser;
-    }
-    if (m_pSingleStream) {
-        delete m_pSingleStream;
-    }
+    delete m_pParser;
+    delete m_pSingleStream;
     if (m_pStreamArray) {
         for (FX_DWORD i = 0; i < m_nStreams; i ++)
-            if (m_pStreamArray[i]) {
-                delete m_pStreamArray[i];
-            }
+            delete m_pStreamArray[i];
         FX_Free(m_pStreamArray);
     }
     if (m_pData && m_pSingleStream == NULL) {
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
index bd53874..48b3a40 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
@@ -34,10 +34,8 @@
 }
 CPDF_TilingPattern::~CPDF_TilingPattern()
 {
-    if (m_pForm) {
-        delete m_pForm;
-        m_pForm = NULL;
-    }
+    delete m_pForm;
+    m_pForm = NULL;
 }
 FX_BOOL CPDF_TilingPattern::Load()
 {
@@ -92,9 +90,7 @@
 void CPDF_ShadingPattern::Clear()
 {
     for (int i = 0; i < m_nFuncs; i ++) {
-        if (m_pFunctions[i]) {
-            delete m_pFunctions[i];
-        }
+        delete m_pFunctions[i];
         m_pFunctions[i] = NULL;
     }
     CPDF_ColorSpace* pCS = m_pCountedCS ? m_pCountedCS->get() : NULL;
@@ -117,9 +113,7 @@
     }
     if (m_nFuncs) {
         for (int i = 0; i < m_nFuncs; i ++)
-            if (m_pFunctions[i]) {
-                delete m_pFunctions[i];
-            }
+            delete m_pFunctions[i];
         m_nFuncs = 0;
     }
     CPDF_Object* pFunc = pShadingDict->GetElementValue(FX_BSTRC("Function"));
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
index ac48dc6..efe085c 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
@@ -18,9 +18,7 @@
 }
 CFX_DataFilter::~CFX_DataFilter()
 {
-    if (m_pDestFilter) {
-        delete m_pDestFilter;
-    }
+    delete m_pDestFilter;
 }
 void CFX_DataFilter::SetDestFilter(CFX_DataFilter* pFilter)
 {
@@ -192,12 +190,8 @@
 }
 CPDF_StreamFilter::~CPDF_StreamFilter()
 {
-    if (m_pFilter) {
-        delete m_pFilter;
-    }
-    if (m_pBuffer) {
-        delete m_pBuffer;
-    }
+    delete m_pFilter;
+    delete m_pBuffer;
 }
 #define FPDF_FILTER_BUFFER_IN_SIZE	FPDF_FILTER_BUFFER_SIZE
 FX_DWORD CPDF_StreamFilter::ReadBlock(uint8_t* buffer, FX_DWORD buf_size)
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index 56df7f3..685ee04 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -68,7 +68,7 @@
 void CPDF_Parser::CloseParser(FX_BOOL bReParse)
 {
     m_bVersionUpdated = FALSE;
-    if (m_pDocument && !bReParse) {
+    if (!bReParse) {
         delete m_pDocument;
         m_pDocument = NULL;
     }
@@ -309,11 +309,9 @@
 }
 void CPDF_Parser::ReleaseEncryptHandler()
 {
-    if (m_Syntax.m_pCryptoHandler) {
-        delete m_Syntax.m_pCryptoHandler;
-        m_Syntax.m_pCryptoHandler = NULL;
-    }
-    if (m_pSecurityHandler && !m_bForceUseSecurityHandler) {
+    delete m_Syntax.m_pCryptoHandler;
+    m_Syntax.m_pCryptoHandler = NULL;
+    if (!m_bForceUseSecurityHandler) {
         delete m_pSecurityHandler;
         m_pSecurityHandler = NULL;
     }
@@ -1482,7 +1480,7 @@
 void CPDF_Parser::SetSecurityHandler(CPDF_SecurityHandler* pSecurityHandler, FX_BOOL bForced)
 {
     ASSERT(m_pSecurityHandler == NULL);
-    if (m_pSecurityHandler && !m_bForceUseSecurityHandler) {
+    if (!m_bForceUseSecurityHandler) {
         delete m_pSecurityHandler;
         m_pSecurityHandler = NULL;
     }
@@ -2984,12 +2982,8 @@
     if (m_pTrailer) {
         m_pTrailer->Release();
     }
-    if (m_pageMapCheckState) {
-        delete m_pageMapCheckState;
-    }
-    if (m_pagesLoadState) {
-        delete m_pagesLoadState;
-    }
+    delete m_pageMapCheckState;
+    delete m_pagesLoadState;
     int32_t i = 0;
     int32_t iSize = m_arrayAcroforms.GetSize();
     for (i = 0; i < iSize; ++i) {
@@ -4640,10 +4634,8 @@
 {
     int32_t iSize = m_childNode.GetSize();
     for (int32_t i = 0; i < iSize; ++i) {
-        CPDF_PageNode *pNode = (CPDF_PageNode*)m_childNode[i];
-        if (pNode) {
-            delete pNode;
-        }
+        CPDF_PageNode* pNode = (CPDF_PageNode*)m_childNode[i];
+        delete pNode;
     }
     m_childNode.RemoveAll();
 }
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp
index 6a876a2..cdbecd6 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_cache.cpp
@@ -188,20 +188,14 @@
 }
 CPDF_ImageCache::~CPDF_ImageCache()
 {
-    if (m_pCachedBitmap) {
-        delete m_pCachedBitmap;
-        m_pCachedBitmap = NULL;
-    }
-    if (m_pCachedMask) {
-        delete m_pCachedMask;
-        m_pCachedMask = NULL;
-    }
+    delete m_pCachedBitmap;
+    m_pCachedBitmap = NULL;
+    delete m_pCachedMask;
+    m_pCachedMask = NULL;
 }
 void CPDF_ImageCache::Reset(const CFX_DIBitmap* pBitmap)
 {
-    if (m_pCachedBitmap) {
-        delete m_pCachedBitmap;
-    }
+    delete m_pCachedBitmap;
     m_pCachedBitmap = NULL;
     if (pBitmap) {
         m_pCachedBitmap = pBitmap->Clone();
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 5748e23..3ee2222 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -994,9 +994,7 @@
                 m_pDevice->RestoreState();
             }
         m_pDevice->RestoreState();
-        if (pStates) {
-            delete pStates;
-        }
+        delete pStates;
         return;
     }
     if (bAligned) {
diff --git a/core/src/fpdfdoc/doc_vt.cpp b/core/src/fpdfdoc/doc_vt.cpp
index fd3cbb0..c6fdf0e 100644
--- a/core/src/fpdfdoc/doc_vt.cpp
+++ b/core/src/fpdfdoc/doc_vt.cpp
@@ -822,10 +822,8 @@
 }
 CPDF_VariableText::~CPDF_VariableText()
 {
-    if (m_pVTIterator) {
-        delete m_pVTIterator;
-        m_pVTIterator = NULL;
-    }
+    delete m_pVTIterator;
+    m_pVTIterator = NULL;
     ResetAll();
 }
 void CPDF_VariableText::Initialize()
diff --git a/core/src/fpdfdoc/pdf_vt.h b/core/src/fpdfdoc/pdf_vt.h
index 5acab96..a75490f 100644
--- a/core/src/fpdfdoc/pdf_vt.h
+++ b/core/src/fpdfdoc/pdf_vt.h
@@ -84,12 +84,8 @@
     }
     virtual ~CPVT_SectionInfo()
     {
-        if (pSecProps) {
-            delete pSecProps;
-        }
-        if (pWordProps) {
-            delete pWordProps;
-        }
+        delete pSecProps;
+        delete pWordProps;
     }
     CPVT_SectionInfo(const CPVT_SectionInfo & other): rcSection(), nTotalLine(0), pSecProps(NULL), pWordProps(NULL)
     {
@@ -148,9 +144,7 @@
     }
     virtual ~CPVT_WordInfo()
     {
-        if (pWordProps) {
-            delete pWordProps;
-        }
+        delete pWordProps;
     }
     CPVT_WordInfo(const CPVT_WordInfo & word): Word(0), nCharset(0),
         fWordX(0.0f), fWordY(0.0f), fWordTail(0.0f), nFontIndex(-1), pWordProps(NULL)
diff --git a/core/src/fxcodec/codec/fx_codec_icc.cpp b/core/src/fxcodec/codec/fx_codec_icc.cpp
index 703d00a..da503c0 100644
--- a/core/src/fxcodec/codec/fx_codec_icc.cpp
+++ b/core/src/fxcodec/codec/fx_codec_icc.cpp
@@ -514,17 +514,13 @@
     CFX_IccProfileCache* pProfileCache;
     while (pos) {
         m_MapProfile.GetNextAssoc(pos, key, (void*&)pProfileCache);
-        if (pProfileCache) {
-            delete pProfileCache;
-        }
+        delete pProfileCache;
     }
     pos = m_MapTranform.GetStartPosition();
     CFX_IccTransformCache* pTransformCache;
     while (pos) {
         m_MapTranform.GetNextAssoc(pos, key, (void*&)pTransformCache);
-        if (pTransformCache) {
-            delete pTransformCache;
-        }
+        delete pTransformCache;
     }
 }
 void* CCodec_IccModule::CreateTransform_sRGB(const uint8_t* pProfileData, FX_DWORD dwProfileSize, int32_t& nComponents, int32_t intent, FX_DWORD dwSrcFormat)
diff --git a/core/src/fxcodec/jbig2/JBig2_Context.cpp b/core/src/fxcodec/jbig2/JBig2_Context.cpp
index f58b7f3..41a3cce 100644
--- a/core/src/fxcodec/jbig2/JBig2_Context.cpp
+++ b/core/src/fxcodec/jbig2/JBig2_Context.cpp
@@ -30,9 +30,7 @@
 }
 void CJBig2_Context::DestroyContext(CJBig2_Context *pContext)
 {
-    if(pContext) {
-        delete pContext;
-    }
+    delete pContext;
 }
 CJBig2_Context::CJBig2_Context(uint8_t *pGlobalData, FX_DWORD dwGlobalLength,
                                uint8_t *pData, FX_DWORD dwLength, int32_t nStreamType, std::list<CJBig2_CachePair>* pSymbolDictCache, IFX_Pause* pPause)
@@ -63,37 +61,25 @@
 }
 CJBig2_Context::~CJBig2_Context()
 {
-    if(m_pArithDecoder) {
-        delete m_pArithDecoder;
-    }
+    delete m_pArithDecoder;
     m_pArithDecoder = NULL;
-    if(m_pGRD) {
-        delete m_pGRD;
-    }
+    delete m_pGRD;
     m_pGRD = NULL;
     if(m_gbContext) {
         m_pModule->JBig2_Free(m_gbContext);
     }
     m_gbContext = NULL;
-    if(m_pGlobalContext) {
-        delete m_pGlobalContext;
-    }
+    delete m_pGlobalContext;
     m_pGlobalContext = NULL;
-    if(m_pPageInfoList) {
-        delete m_pPageInfoList;
-    }
+    delete m_pPageInfoList;
     m_pPageInfoList = NULL;
-    if(m_bBufSpecified && m_pPage) {
+    if(m_bBufSpecified) {
         delete m_pPage;
     }
     m_pPage = NULL;
-    if(m_pStream) {
-        delete m_pStream;
-    }
+    delete m_pStream;
     m_pStream = NULL;
-    if(m_pSegmentList) {
-        delete m_pSegmentList;
-    }
+    delete m_pSegmentList;
     m_pSegmentList = NULL;
 }
 int32_t CJBig2_Context::decodeFile(IFX_Pause* pPause)
@@ -247,9 +233,7 @@
     }
     m_bFirstPage = TRUE;
     m_PauseStep = 0;
-    if(m_pPage) {
-        delete m_pPage;
-    }
+    delete m_pPage;
     JBIG2_ALLOC(m_pPage, CJBig2_Image(width, height, stride, pBuf));
     m_bBufSpecified = TRUE;
     if(m_pPage && pPause && pPause->NeedToPauseNow()) {
@@ -316,9 +300,7 @@
     int32_t nRet = JBIG2_ERROR_STREAM_TYPE;
     m_bFirstPage = FALSE;
     m_PauseStep = 0;
-    if(m_pPage) {
-        delete m_pPage;
-    }
+    delete m_pPage;
     JBIG2_ALLOC(m_pPage, CJBig2_Image(width, height, stride, pBuf));
     m_bBufSpecified = TRUE;
     if(m_pPage && pPause && pPause->NeedToPauseNow()) {
@@ -571,9 +553,7 @@
                     pPageInfo->m_bIsStriped = 1;
                 }
                 if(!m_bBufSpecified) {
-                    if(m_pPage) {
-                        delete m_pPage;
-                    }
+                    delete m_pPage;
                     if(pPageInfo->m_dwHeight == 0xffffffff) {
                         JBIG2_ALLOC(m_pPage, CJBig2_Image(pPageInfo->m_dwWidth, pPageInfo->m_wMaxStripeSize));
                     } else {
@@ -860,21 +840,11 @@
     if(SDINSYMS) {
         m_pModule->JBig2_Free(SDINSYMS);
     }
-    if(Table_B1) {
-        delete Table_B1;
-    }
-    if(Table_B2) {
-        delete Table_B2;
-    }
-    if(Table_B3) {
-        delete Table_B3;
-    }
-    if(Table_B4) {
-        delete Table_B4;
-    }
-    if(Table_B5) {
-        delete Table_B5;
-    }
+    delete Table_B1;
+    delete Table_B2;
+    delete Table_B3;
+    delete Table_B4;
+    delete Table_B5;
     if(bUsed == FALSE) {
         if(gbContext) {
             m_pModule->JBig2_Free(gbContext);
@@ -889,21 +859,11 @@
     if(SDINSYMS) {
         m_pModule->JBig2_Free(SDINSYMS);
     }
-    if(Table_B1) {
-        delete Table_B1;
-    }
-    if(Table_B2) {
-        delete Table_B2;
-    }
-    if(Table_B3) {
-        delete Table_B3;
-    }
-    if(Table_B4) {
-        delete Table_B4;
-    }
-    if(Table_B5) {
-        delete Table_B5;
-    }
+    delete Table_B1;
+    delete Table_B2;
+    delete Table_B3;
+    delete Table_B4;
+    delete Table_B5;
     if(gbContext) {
         m_pModule->JBig2_Free(gbContext);
     }
@@ -1242,39 +1202,17 @@
     if(grContext) {
         m_pModule->JBig2_Free(grContext);
     }
-    if(Table_B1) {
-        delete Table_B1;
-    }
-    if(Table_B6) {
-        delete Table_B6;
-    }
-    if(Table_B7) {
-        delete Table_B7;
-    }
-    if(Table_B8) {
-        delete Table_B8;
-    }
-    if(Table_B9) {
-        delete Table_B9;
-    }
-    if(Table_B10) {
-        delete Table_B10;
-    }
-    if(Table_B11) {
-        delete Table_B11;
-    }
-    if(Table_B12) {
-        delete Table_B12;
-    }
-    if(Table_B13) {
-        delete Table_B13;
-    }
-    if(Table_B14) {
-        delete Table_B14;
-    }
-    if(Table_B15) {
-        delete Table_B15;
-    }
+    delete Table_B1;
+    delete Table_B6;
+    delete Table_B7;
+    delete Table_B8;
+    delete Table_B9;
+    delete Table_B10;
+    delete Table_B11;
+    delete Table_B12;
+    delete Table_B13;
+    delete Table_B14;
+    delete Table_B15;
     return JBIG2_SUCCESS;
 failed:
     delete pTRD;
@@ -1287,39 +1225,17 @@
     if(grContext) {
         m_pModule->JBig2_Free(grContext);
     }
-    if(Table_B1) {
-        delete Table_B1;
-    }
-    if(Table_B6) {
-        delete Table_B6;
-    }
-    if(Table_B7) {
-        delete Table_B7;
-    }
-    if(Table_B8) {
-        delete Table_B8;
-    }
-    if(Table_B9) {
-        delete Table_B9;
-    }
-    if(Table_B10) {
-        delete Table_B10;
-    }
-    if(Table_B11) {
-        delete Table_B11;
-    }
-    if(Table_B12) {
-        delete Table_B12;
-    }
-    if(Table_B13) {
-        delete Table_B13;
-    }
-    if(Table_B14) {
-        delete Table_B14;
-    }
-    if(Table_B15) {
-        delete Table_B15;
-    }
+    delete Table_B1;
+    delete Table_B6;
+    delete Table_B7;
+    delete Table_B8;
+    delete Table_B9;
+    delete Table_B10;
+    delete Table_B11;
+    delete Table_B12;
+    delete Table_B13;
+    delete Table_B14;
+    delete Table_B15;
     return nRet;
 }
 
diff --git a/core/src/fxcodec/jbig2/JBig2_PatternDict.cpp b/core/src/fxcodec/jbig2/JBig2_PatternDict.cpp
index 0c6e5be..df45288 100644
--- a/core/src/fxcodec/jbig2/JBig2_PatternDict.cpp
+++ b/core/src/fxcodec/jbig2/JBig2_PatternDict.cpp
@@ -15,9 +15,7 @@
 {
     if(HDPATS) {
         for(FX_DWORD i = 0; i < NUMPATS; i++) {
-            if(HDPATS[i]) {
-                delete HDPATS[i];
-            }
+            delete HDPATS[i];
         }
         m_pModule->JBig2_Free(HDPATS);
     }
diff --git a/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp b/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp
index e9bb9c6..0e5b92f 100644
--- a/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp
+++ b/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp
@@ -41,9 +41,7 @@
 {
     if(SDEXSYMS) {
         for(FX_DWORD i = 0; i < SDNUMEXSYMS; i++) {
-            if(SDEXSYMS[i]) {
-                delete SDEXSYMS[i];
-            }
+            delete SDEXSYMS[i];
         }
         m_pModule->JBig2_Free(SDEXSYMS);
     }
diff --git a/core/src/fxge/agg/src/fx_agg_driver.cpp b/core/src/fxge/agg/src/fx_agg_driver.cpp
index 18a1fa4..8e7846a 100644
--- a/core/src/fxge/agg/src/fx_agg_driver.cpp
+++ b/core/src/fxge/agg/src/fx_agg_driver.cpp
@@ -205,9 +205,7 @@
 }
 CFX_AggDeviceDriver::~CFX_AggDeviceDriver()
 {
-    if (m_pClipRgn) {
-        delete m_pClipRgn;
-    }
+    delete m_pClipRgn;
     for (int i = 0; i < m_StateStack.GetSize(); i ++)
         if (m_StateStack[i]) {
             delete (CFX_ClipRgn*)m_StateStack[i];
@@ -274,17 +272,13 @@
 void CFX_AggDeviceDriver::RestoreState(FX_BOOL bKeepSaved)
 {
     if (m_StateStack.GetSize() == 0) {
-        if (m_pClipRgn) {
-            delete m_pClipRgn;
-            m_pClipRgn = NULL;
-        }
+        delete m_pClipRgn;
+        m_pClipRgn = NULL;
         return;
     }
     CFX_ClipRgn* pSavedClip = (CFX_ClipRgn*)m_StateStack[m_StateStack.GetSize() - 1];
-    if (m_pClipRgn) {
-        delete m_pClipRgn;
-        m_pClipRgn = NULL;
-    }
+    delete m_pClipRgn;
+    m_pClipRgn = NULL;
     if (bKeepSaved) {
         if (pSavedClip) {
             m_pClipRgn = new CFX_ClipRgn(*pSavedClip);
@@ -1604,7 +1598,7 @@
 }
 CFX_FxgeDevice::~CFX_FxgeDevice()
 {
-    if (m_bOwnedBitmap && GetBitmap()) {
+    if (m_bOwnedBitmap) {
         delete GetBitmap();
     }
 }
diff --git a/core/src/fxge/android/fpf_skiafontmgr.cpp b/core/src/fxge/android/fpf_skiafontmgr.cpp
index ec7af81..86bb052 100644
--- a/core/src/fxge/android/fpf_skiafontmgr.cpp
+++ b/core/src/fxge/android/fpf_skiafontmgr.cpp
@@ -245,9 +245,7 @@
     m_FamilyFonts.RemoveAll();
     for (int32_t i = m_FontFaces.GetUpperBound(); i >= 0; i--) {
         CFPF_SkiaFontDescriptor *pFont = (CFPF_SkiaFontDescriptor*)m_FontFaces.ElementAt(i);
-        if (pFont) {
-            delete pFont;
-        }
+        delete pFont;
     }
     m_FontFaces.RemoveAll();
     if (m_FTLibrary) {
diff --git a/core/src/fxge/android/fpf_skiamodule.cpp b/core/src/fxge/android/fpf_skiamodule.cpp
index e6fded6..37bfd9c 100644
--- a/core/src/fxge/android/fpf_skiamodule.cpp
+++ b/core/src/fxge/android/fpf_skiamodule.cpp
@@ -18,9 +18,7 @@
 }
 CFPF_SkiaDeviceModule::~CFPF_SkiaDeviceModule()
 {
-    if (m_pFontMgr) {
-        delete m_pFontMgr;
-    }
+    delete m_pFontMgr;
 }
 void CFPF_SkiaDeviceModule::Destroy()
 {
diff --git a/core/src/fxge/apple/apple_int.h b/core/src/fxge/apple/apple_int.h
index 48476c3..715e48d 100644
--- a/core/src/fxge/apple/apple_int.h
+++ b/core/src/fxge/apple/apple_int.h
@@ -71,9 +71,7 @@
     }
     ~CApplePlatform()
     {
-        if (m_pFontMapper) {
-            delete m_pFontMapper;
-        }
+        delete m_pFontMapper;
     }
     CQuartz2D	_quartz2d;
     IFX_FontMapper* m_pFontMapper;
diff --git a/core/src/fxge/apple/fx_quartz_device.cpp b/core/src/fxge/apple/fx_quartz_device.cpp
index 8f0f4db..d1e4f54 100644
--- a/core/src/fxge/apple/fx_quartz_device.cpp
+++ b/core/src/fxge/apple/fx_quartz_device.cpp
@@ -1082,7 +1082,7 @@
     if (m_pContext) {
         CGContextRelease(m_pContext);
     }
-    if (GetBitmap() && m_bOwnedBitmap) {
+    if (m_bOwnedBitmap) {
         delete GetBitmap();
     }
 }
diff --git a/core/src/fxge/dib/fx_dib_engine.cpp b/core/src/fxge/dib/fx_dib_engine.cpp
index 54b9bd9..11e9a11 100644
--- a/core/src/fxge/dib/fx_dib_engine.cpp
+++ b/core/src/fxge/dib/fx_dib_engine.cpp
@@ -679,9 +679,7 @@
     if (m_pScanline) {
         FX_Free(m_pScanline);
     }
-    if (m_pStretchEngine) {
-        delete m_pStretchEngine;
-    }
+    delete m_pStretchEngine;
     if (m_pMaskScanline) {
         FX_Free(m_pMaskScanline);
     }
diff --git a/core/src/fxge/dib/fx_dib_main.cpp b/core/src/fxge/dib/fx_dib_main.cpp
index a148334..82a1497 100644
--- a/core/src/fxge/dib/fx_dib_main.cpp
+++ b/core/src/fxge/dib/fx_dib_main.cpp
@@ -48,9 +48,7 @@
     if (m_pPalette) {
         FX_Free(m_pPalette);
     }
-    if (m_pAlphaMask) {
-        delete m_pAlphaMask;
-    }
+    delete m_pAlphaMask;
 }
 CFX_DIBitmap::CFX_DIBitmap()
 {
@@ -139,9 +137,7 @@
     if (m_pPalette) {
         FX_Free(m_pPalette);
     }
-    if (m_pAlphaMask) {
-        delete m_pAlphaMask;
-    }
+    delete m_pAlphaMask;
     m_pBuffer = pSrcBitmap->m_pBuffer;
     m_pPalette = pSrcBitmap->m_pPalette;
     m_pAlphaMask = pSrcBitmap->m_pAlphaMask;
@@ -1470,9 +1466,7 @@
 }
 CFX_DIBExtractor::~CFX_DIBExtractor()
 {
-    if (m_pBitmap) {
-        delete m_pBitmap;
-    }
+    delete m_pBitmap;
 }
 CFX_FilteredDIB::CFX_FilteredDIB()
 {
@@ -1481,7 +1475,7 @@
 }
 CFX_FilteredDIB::~CFX_FilteredDIB()
 {
-    if (m_pSrc && m_bAutoDropSrc) {
+    if (m_bAutoDropSrc) {
         delete m_pSrc;
     }
     if (m_pScanline) {
@@ -1521,9 +1515,7 @@
 }
 CFX_ImageRenderer::~CFX_ImageRenderer()
 {
-    if (m_pTransformer) {
-        delete m_pTransformer;
-    }
+    delete m_pTransformer;
 }
 extern FX_RECT _FXDIB_SwapClipBox(FX_RECT& clip, int width, int height, FX_BOOL bFlipX, FX_BOOL bFlipY);
 FX_BOOL CFX_ImageRenderer::Start(CFX_DIBitmap* pDevice, const CFX_ClipRgn* pClipRgn,
@@ -1637,9 +1629,7 @@
 }
 CFX_BitmapStorer::~CFX_BitmapStorer()
 {
-    if (m_pBitmap) {
-        delete m_pBitmap;
-    }
+    delete m_pBitmap;
 }
 CFX_DIBitmap* CFX_BitmapStorer::Detach()
 {
@@ -1649,9 +1639,7 @@
 }
 void CFX_BitmapStorer::Replace(CFX_DIBitmap* pBitmap)
 {
-    if (m_pBitmap) {
-        delete m_pBitmap;
-    }
+    delete m_pBitmap;
     m_pBitmap = pBitmap;
 }
 void CFX_BitmapStorer::ComposeScanline(int line, const uint8_t* scanline, const uint8_t* scan_extra_alpha)
diff --git a/core/src/fxge/ge/fx_ge.cpp b/core/src/fxge/ge/fx_ge.cpp
index 5198a04..4b34a07 100644
--- a/core/src/fxge/ge/fx_ge.cpp
+++ b/core/src/fxge/ge/fx_ge.cpp
@@ -17,13 +17,9 @@
 }
 CFX_GEModule::~CFX_GEModule()
 {
-    if (m_pFontCache) {
-        delete m_pFontCache;
-    }
+    delete m_pFontCache;
     m_pFontCache = NULL;
-    if (m_pFontMgr) {
-        delete m_pFontMgr;
-    }
+    delete m_pFontMgr;
     m_pFontMgr = NULL;
     DestroyPlatform();
 }
@@ -44,9 +40,7 @@
 }
 void CFX_GEModule::Destroy()
 {
-    if (g_pGEModule) {
-        delete g_pGEModule;
-    }
+    delete g_pGEModule;
     g_pGEModule = NULL;
 }
 CFX_FontCache* CFX_GEModule::GetFontCache()
diff --git a/core/src/fxge/ge/fx_ge_device.cpp b/core/src/fxge/ge/fx_ge_device.cpp
index b4a4a89..793dfc5 100644
--- a/core/src/fxge/ge/fx_ge_device.cpp
+++ b/core/src/fxge/ge/fx_ge_device.cpp
@@ -12,15 +12,11 @@
 }
 CFX_RenderDevice::~CFX_RenderDevice()
 {
-    if (m_pDeviceDriver) {
-        delete m_pDeviceDriver;
-    }
+    delete m_pDeviceDriver;
 }
 void CFX_RenderDevice::SetDeviceDriver(IFX_RenderDeviceDriver* pDriver)
 {
-    if (m_pDeviceDriver) {
-        delete m_pDeviceDriver;
-    }
+    delete m_pDeviceDriver;
     m_pDeviceDriver = pDriver;
     InitDeviceInfo();
 }
diff --git a/core/src/fxge/ge/fx_ge_font.cpp b/core/src/fxge/ge/fx_ge_font.cpp
index 8e4e5ac..f88cbaa 100644
--- a/core/src/fxge/ge/fx_ge_font.cpp
+++ b/core/src/fxge/ge/fx_ge_font.cpp
@@ -28,10 +28,8 @@
 }
 CFX_Font::~CFX_Font()
 {
-    if (m_pSubstFont) {
-        delete m_pSubstFont;
-        m_pSubstFont = NULL;
-    }
+    delete m_pSubstFont;
+    m_pSubstFont = NULL;
     if (m_pFontDataAllocation) {
         FX_Free(m_pFontDataAllocation);
         m_pFontDataAllocation = NULL;
diff --git a/core/src/fxge/ge/fx_ge_fontmap.cpp b/core/src/fxge/ge/fx_ge_fontmap.cpp
index 8406b3c..8956cd1 100644
--- a/core/src/fxge/ge/fx_ge_fontmap.cpp
+++ b/core/src/fxge/ge/fx_ge_fontmap.cpp
@@ -71,9 +71,7 @@
 }
 CFX_FontMgr::~CFX_FontMgr()
 {
-    if (m_pBuiltinMapper) {
-        delete m_pBuiltinMapper;
-    }
+    delete m_pBuiltinMapper;
     FreeCache();
     if (m_FTLibrary) {
         FXFT_Done_FreeType(m_FTLibrary);
diff --git a/core/src/fxge/ge/fx_ge_text.cpp b/core/src/fxge/ge/fx_ge_text.cpp
index 7daeecb..b55119b 100644
--- a/core/src/fxge/ge/fx_ge_text.cpp
+++ b/core/src/fxge/ge/fx_ge_text.cpp
@@ -1082,9 +1082,7 @@
         m_PathMap.GetNextAssoc(pos, key1, (void*&)pPath);
         delete pPath;
     }
-    if (m_pBitmap) {
-        delete m_pBitmap;
-    }
+    delete m_pBitmap;
     m_PathMap.RemoveAll();
 }
 #if _FXM_PLATFORM_  != _FXM_PLATFORM_APPLE_
diff --git a/core/src/fxge/skia/fx_skia_device.cpp b/core/src/fxge/skia/fx_skia_device.cpp
index 3812426..41ce077 100644
--- a/core/src/fxge/skia/fx_skia_device.cpp
+++ b/core/src/fxge/skia/fx_skia_device.cpp
@@ -241,7 +241,7 @@
 }
 CFX_SkiaDeviceDriver::~CFX_SkiaDeviceDriver()
 {
-	if (m_pAggDriver) delete m_pAggDriver;
+    delete m_pAggDriver;
 }
 FX_BOOL CFX_SkiaDeviceDriver::DrawDeviceText(int nChars, const FXTEXT_CHARPOS* pCharPos, CFX_Font* pFont,
 		CFX_FontCache* pCache, const CFX_AffineMatrix* pObject2Device, FX_FIXFLOAT font_size, FX_DWORD color,
diff --git a/core/src/fxge/win32/fx_win32_dib.cpp b/core/src/fxge/win32/fx_win32_dib.cpp
index 7d6fe2e..191c2dc 100644
--- a/core/src/fxge/win32/fx_win32_dib.cpp
+++ b/core/src/fxge/win32/fx_win32_dib.cpp
@@ -135,9 +135,7 @@
     CFX_ByteString info = GetBitmapInfo(pDIBitmap);
     int ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
     if (!ret) {
-        if (pDIBitmap) {
-            delete pDIBitmap;
-        }
+        delete pDIBitmap;
         pDIBitmap = NULL;
     }
     DeleteDC(hDC);
@@ -167,9 +165,7 @@
     CFX_ByteString info = GetBitmapInfo(pDIBitmap);
     int ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
     if (!ret) {
-        if (pDIBitmap) {
-            delete pDIBitmap;
-        }
+        delete pDIBitmap;
         pDIBitmap = NULL;
     }
     DeleteDC(hDC);
@@ -241,9 +237,7 @@
         }
     }
     if (ret == 0) {
-        if (pDIBitmap) {
-            delete pDIBitmap;
-        }
+        delete pDIBitmap;
         pDIBitmap = NULL;
     }
     if (bCreatedDC) {
diff --git a/core/src/fxge/win32/fx_win32_print.cpp b/core/src/fxge/win32/fx_win32_print.cpp
index a8e8ce1..199ab78 100644
--- a/core/src/fxge/win32/fx_win32_print.cpp
+++ b/core/src/fxge/win32/fx_win32_print.cpp
@@ -273,9 +273,7 @@
 CPSPrinterDriver::~CPSPrinterDriver()
 {
     EndRendering();
-    if (m_pPSOutput) {
-        delete m_pPSOutput;
-    }
+    delete m_pPSOutput;
 }
 FX_BOOL CPSPrinterDriver::Init(HDC hDC, int pslevel, FX_BOOL bCmykOutput)
 {
diff --git a/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp b/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp
index 9969c18..464ff3c 100644
--- a/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp
+++ b/fpdfsdk/src/formfiller/FFL_IFormFiller.cpp
@@ -704,14 +704,11 @@
 
 void CFFL_IFormFiller::UnRegisterFormFiller(CPDFSDK_Annot* pAnnot)
 {
-	CFFL_FormFiller * pFormFiller = NULL;
-
-	if (m_Maps.Lookup(pAnnot,pFormFiller))
-	{
-		if (pFormFiller)
-			delete pFormFiller;
-		m_Maps.RemoveKey(pAnnot);
-	}
+    CFFL_FormFiller* pFormFiller = nullptr;
+    if (m_Maps.Lookup(pAnnot,pFormFiller)) {
+        delete pFormFiller;
+        m_Maps.RemoveKey(pAnnot);
+    }
 }
 
 void CFFL_IFormFiller::SetFocusAnnotTab(CPDFSDK_Annot* pWidget, FX_BOOL bSameField, FX_BOOL bNext)
diff --git a/fpdfsdk/src/fpdf_dataavail.cpp b/fpdfsdk/src/fpdf_dataavail.cpp
index b6363a8..b26d2af 100644
--- a/fpdfsdk/src/fpdf_dataavail.cpp
+++ b/fpdfsdk/src/fpdf_dataavail.cpp
@@ -87,7 +87,7 @@
 
 	~CFPDF_DataAvail()
 	{
-		if (m_pDataAvail) delete m_pDataAvail;
+            delete m_pDataAvail;
 	}
 
 	IPDF_DataAvail*			m_pDataAvail;
@@ -106,8 +106,7 @@
 
 DLLEXPORT void STDCALL FPDFAvail_Destroy(FPDF_AVAIL avail)
 {
-	if (avail == NULL) return;
-	delete (CFPDF_DataAvail*)avail;
+    delete (CFPDF_DataAvail*)avail;
 }
 
 DLLEXPORT int STDCALL FPDFAvail_IsDocAvail(FPDF_AVAIL avail, FX_DOWNLOADHINTS* hints)
diff --git a/fpdfsdk/src/fpdfview.cpp b/fpdfsdk/src/fpdfview.cpp
index 5473119..9db0554 100644
--- a/fpdfsdk/src/fpdfview.cpp
+++ b/fpdfsdk/src/fpdfview.cpp
@@ -481,14 +481,12 @@
 #endif
 
 #endif
-	if (bBackgroundAlphaNeeded)
-	{
-		if (pBitmap)
-			delete pBitmap;
-		pBitmap = NULL;
-	}
-	delete pContext;
-	pPage->RemovePrivateData((void*)1);
+    if (bBackgroundAlphaNeeded) {
+        delete pBitmap;
+        pBitmap = NULL;
+    }
+    delete pContext;
+    pPage->RemovePrivateData((void*)1);
 }
 #endif
 
@@ -662,8 +660,7 @@
 
 DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap)
 {
-	if (bitmap == NULL) return;
-	delete (CFX_DIBitmap*)bitmap;
+    delete (CFX_DIBitmap*)bitmap;
 }
 
 void FPDF_RenderPage_Retail(CRenderContext* pContext, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
diff --git a/fpdfsdk/src/fsdk_mgr.cpp b/fpdfsdk/src/fsdk_mgr.cpp
index b8028aa..5d4680d 100644
--- a/fpdfsdk/src/fsdk_mgr.cpp
+++ b/fpdfsdk/src/fsdk_mgr.cpp
@@ -239,34 +239,19 @@
 
 CPDFDoc_Environment::~CPDFDoc_Environment()
 {
+    delete m_pIFormFiller;
+    m_pIFormFiller = NULL;
+    if (m_pJSRuntime && m_pJSRuntimeFactory)
+        m_pJSRuntimeFactory->DeleteJSRuntime(m_pJSRuntime);
+    m_pJSRuntimeFactory->Release();
 
-	if ( m_pIFormFiller )
-	{
-		delete m_pIFormFiller;
-		m_pIFormFiller = NULL;
-	}
-	if(m_pJSRuntime && m_pJSRuntimeFactory)
-		m_pJSRuntimeFactory->DeleteJSRuntime(m_pJSRuntime);
-	m_pJSRuntimeFactory->Release();
+    delete m_pSysHandler;
+    m_pSysHandler = NULL;
 
-	if(m_pSysHandler)
-	{
-		delete m_pSysHandler;
-		m_pSysHandler = NULL;
-	}
-
-	if(m_pAnnotHandlerMgr)
-	{
-		delete m_pAnnotHandlerMgr;
-		m_pAnnotHandlerMgr = NULL;
-	}
-	if(m_pActionHandler)
-	{
-		delete m_pActionHandler;
-		m_pActionHandler = NULL;
-	}
-
-
+    delete m_pAnnotHandlerMgr;
+    m_pAnnotHandlerMgr = NULL;
+    delete m_pActionHandler;
+    m_pActionHandler = NULL;
 }
 
 
@@ -639,11 +624,10 @@
 		pAnnotHandlerMgr->ReleaseAnnot(pAnnot);
 	}
 	m_fxAnnotArray.RemoveAll();
-	if(m_pAnnotList)
-	{
-		delete m_pAnnotList;
-		m_pAnnotList = NULL;
-	}
+
+        delete m_pAnnotList;
+        m_pAnnotList = NULL;
+
         m_page->RemovePrivateData((void*)m_page);
         if(m_bTakeOverPage) {
             delete m_page;
diff --git a/fpdfsdk/src/fsdk_rendercontext.cpp b/fpdfsdk/src/fsdk_rendercontext.cpp
index 70c4a17..4b7242d 100644
--- a/fpdfsdk/src/fsdk_rendercontext.cpp
+++ b/fpdfsdk/src/fsdk_rendercontext.cpp
@@ -21,15 +21,15 @@
 
 CRenderContext::~CRenderContext()
 {
-	if (m_pRenderer) delete m_pRenderer;
-	if (m_pContext) delete m_pContext;
-	if (m_pDevice) delete m_pDevice;
-	if (m_pAnnots) delete m_pAnnots;
-	if (m_pOptions->m_pOCContext) delete m_pOptions->m_pOCContext;
-	if (m_pOptions) delete m_pOptions;
+    delete m_pRenderer;
+    delete m_pContext;
+    delete m_pDevice;
+    delete m_pAnnots;
+    delete m_pOptions->m_pOCContext;
+    delete m_pOptions;
 #ifdef _WIN32_WCE
-	if (m_pBitmap) delete m_pBitmap;
-	if (m_hBitmap) DeleteObject(m_hBitmap);
+    delete m_pBitmap;
+    if (m_hBitmap) DeleteObject(m_hBitmap);
 #endif
 }
 
diff --git a/fpdfsdk/src/fxedit/fxet_edit.cpp b/fpdfsdk/src/fxedit/fxet_edit.cpp
index 70d7b77..8e109b5 100644
--- a/fpdfsdk/src/fxedit/fxet_edit.cpp
+++ b/fpdfsdk/src/fxedit/fxet_edit.cpp
@@ -971,19 +971,11 @@
 
 CFX_Edit::~CFX_Edit()
 {
-	if (m_pVTProvide)
-	{
-		delete m_pVTProvide;
-		m_pVTProvide = NULL;
-	}
-
-	if (m_pIterator)
-	{
-		delete m_pIterator;
-		m_pIterator = NULL;
-	}
-
-	ASSERT(m_pGroupUndoItem == NULL);
+    delete m_pVTProvide;
+    m_pVTProvide = NULL;
+    delete m_pIterator;
+    m_pIterator = NULL;
+    ASSERT(m_pGroupUndoItem == NULL);
 }
 
 // public methods
@@ -997,10 +989,8 @@
 
 void CFX_Edit::SetFontMap(IFX_Edit_FontMap * pFontMap)
 {
-	if (m_pVTProvide)
-		delete m_pVTProvide;
-
-	m_pVT->SetProvider(m_pVTProvide = new CFX_Edit_Provider(pFontMap));
+    delete m_pVTProvide;
+    m_pVT->SetProvider(m_pVTProvide = new CFX_Edit_Provider(pFontMap));
 }
 
 void CFX_Edit::SetVTProvider(IPDF_VariableText_Provider* pProvider)
diff --git a/fpdfsdk/src/javascript/app.cpp b/fpdfsdk/src/javascript/app.cpp
index 8966228..9d992d0 100644
--- a/fpdfsdk/src/javascript/app.cpp
+++ b/fpdfsdk/src/javascript/app.cpp
@@ -360,7 +360,7 @@
 							swMsg += L",  ";
 					}
 
-					if(pValue) delete pValue;
+                                        delete pValue;
 				}
 			}
 
diff --git a/fpdfsdk/src/pdfwindow/PWL_ListBox.cpp b/fpdfsdk/src/pdfwindow/PWL_ListBox.cpp
index 0328ee5..48fb409 100644
--- a/fpdfsdk/src/pdfwindow/PWL_ListBox.cpp
+++ b/fpdfsdk/src/pdfwindow/PWL_ListBox.cpp
@@ -90,13 +90,9 @@
 
 CPWL_ListBox::~CPWL_ListBox()
 {
-	IFX_List::DelList(m_pList);
-
-	if (m_pListNotify)
-	{
-		delete m_pListNotify;
-		m_pListNotify = NULL;
-	}
+    IFX_List::DelList(m_pList);
+    delete m_pListNotify;
+    m_pListNotify = NULL;
 }
 
 CFX_ByteString CPWL_ListBox::GetClassName() const
@@ -108,7 +104,7 @@
 {
 	if (m_pList)
 	{
-		if (m_pListNotify) delete m_pListNotify;
+		delete m_pListNotify;
 
 		m_pList->SetFontMap(GetFontMap());
 		m_pList->SetNotify(m_pListNotify = new CPWL_List_Notify(this));
@@ -123,11 +119,8 @@
 
 void CPWL_ListBox::OnDestroy()
 {
-	if (m_pListNotify)
-	{
-		delete m_pListNotify;
-		m_pListNotify = NULL;
-	}
+    delete m_pListNotify;
+    m_pListNotify = NULL;
 }
 
 void CPWL_ListBox::GetThisAppearanceStream(CFX_ByteTextBuf & sAppStream)
diff --git a/fpdfsdk/src/pdfwindow/PWL_Wnd.cpp b/fpdfsdk/src/pdfwindow/PWL_Wnd.cpp
index 8ee9967..dcc6e40 100644
--- a/fpdfsdk/src/pdfwindow/PWL_Wnd.cpp
+++ b/fpdfsdk/src/pdfwindow/PWL_Wnd.cpp
@@ -71,7 +71,7 @@
 
 CPWL_TimerHandler::~CPWL_TimerHandler()
 {
-	if (m_pTimer) delete m_pTimer;
+    delete m_pTimer;
 }
 
 void CPWL_TimerHandler::BeginTimer(int32_t nElapse)