Initialize members of CPDF_TextPageFind class.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1137933004
diff --git a/core/src/fpdftext/fpdf_text_int.cpp b/core/src/fpdftext/fpdf_text_int.cpp
index 4570da2..882b22c 100644
--- a/core/src/fpdftext/fpdf_text_int.cpp
+++ b/core/src/fpdftext/fpdf_text_int.cpp
@@ -2233,13 +2233,16 @@
     return TRUE;
 }
 CPDF_TextPageFind::CPDF_TextPageFind(const IPDF_TextPage* pTextPage)
-    : m_pTextPage(NULL),
+    : m_pTextPage(pTextPage),
+      m_flags(0),
+      m_findNextStart(-1),
+      m_findPreStart(-1),
+      m_bMatchCase(FALSE),
+      m_bMatchWholeWord(FALSE),
+      m_resStart(0),
+      m_resEnd(-1),
       m_IsFind(FALSE)
 {
-    if (!pTextPage) {
-        return;
-    }
-    m_pTextPage = pTextPage;
     m_strText = m_pTextPage->GetPageText();
     int nCount = pTextPage->CountChars();
     if(nCount) {
@@ -2273,8 +2276,6 @@
     if(indexSize % 2) {
         m_CharIndex.RemoveAt(indexSize - 1);
     }
-    m_resStart = 0;
-    m_resEnd = -1;
 }
 int CPDF_TextPageFind::GetCharIndex(int index) const
 {