Remove useless `CPDF_StreamContentParser::m_bResourceMissing`.

It's set, but never read from.

Change-Id: Ifaad3503851138cf7d135b6ce2a4cc8070a390cc
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/85953
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

core/fpdfapi/page/cpdf_streamcontentparser.cpp

diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 112d457..7d20124 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -736,10 +736,8 @@
   }
 
   CPDF_Stream* pXObject = ToStream(FindResourceObj("XObject", name));
-  if (!pXObject) {
-    m_bResourceMissing = true;
+  if (!pXObject)
     return;
-  }
 
   ByteString type;
   if (pXObject->GetDict())
@@ -894,10 +892,9 @@
 void CPDF_StreamContentParser::Handle_SetExtendGraphState() {
   ByteString name = GetString(0);
   CPDF_Dictionary* pGS = ToDictionary(FindResourceObj("ExtGState", name));
-  if (!pGS) {
-    m_bResourceMissing = true;
+  if (!pGS)
     return;
-  }
+
   m_pCurStates->ProcessExtGS(pGS, this);
 }
 
@@ -1146,7 +1143,6 @@
     const ByteString& name) {
   CPDF_Dictionary* pFontDict = ToDictionary(FindResourceObj("Font", name));
   if (!pFontDict) {
-    m_bResourceMissing = true;
     return CPDF_Font::GetStockFont(m_pDocument.Get(),
                                    CFX_Font::kDefaultAnsiFontName);
   }
@@ -1182,10 +1178,8 @@
         ->GetColorSpace(pDefObj, nullptr);
   }
   const CPDF_Object* pCSObj = FindResourceObj("ColorSpace", name);
-  if (!pCSObj) {
-    m_bResourceMissing = true;
+  if (!pCSObj)
     return nullptr;
-  }
   return CPDF_DocPageData::FromDocument(m_pDocument.Get())
       ->GetColorSpace(pCSObj, nullptr);
 }
@@ -1193,10 +1187,8 @@
 RetainPtr<CPDF_Pattern> CPDF_StreamContentParser::FindPattern(
     const ByteString& name) {
   CPDF_Object* pPattern = FindResourceObj("Pattern", name);
-  if (!pPattern || (!pPattern->IsDictionary() && !pPattern->IsStream())) {
-    m_bResourceMissing = true;
+  if (!pPattern || (!pPattern->IsDictionary() && !pPattern->IsStream()))
     return nullptr;
-  }
   return CPDF_DocPageData::FromDocument(m_pDocument.Get())
       ->GetPattern(pPattern, m_pCurStates->m_ParentMatrix);
 }
@@ -1204,10 +1196,8 @@
 RetainPtr<CPDF_ShadingPattern> CPDF_StreamContentParser::FindShading(
     const ByteString& name) {
   CPDF_Object* pPattern = FindResourceObj("Shading", name);
-  if (!pPattern || (!pPattern->IsDictionary() && !pPattern->IsStream())) {
-    m_bResourceMissing = true;
+  if (!pPattern || (!pPattern->IsDictionary() && !pPattern->IsStream()))
     return nullptr;
-  }
   return CPDF_DocPageData::FromDocument(m_pDocument.Get())
       ->GetShading(pPattern, m_pCurStates->m_ParentMatrix);
 }

core/fpdfapi/page/cpdf_streamcontentparser.h

diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.h b/core/fpdfapi/page/cpdf_streamcontentparser.h
index 70de6fa..3dcc2ac 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.h
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.h
@@ -238,7 +238,6 @@
   ByteString m_LastImageName;
   RetainPtr<CPDF_Image> m_pLastImage;
   bool m_bColored = false;
-  bool m_bResourceMissing = false;
   std::vector<std::unique_ptr<CPDF_AllStates>> m_StateStack;
   float m_Type3Data[6] = {0.0f};
   ContentParam m_ParamBuf[kParamBufSize];