Reduce signed/unsigned comparison warnings

core/fpdfapi/fpdf_parser/cpdf_hint_tables.cpp

Index: core/fpdfapi/fpdf_parser/cpdf_hint_tables.cpp
diff --git a/core/fpdfapi/fpdf_parser/cpdf_hint_tables.cpp b/core/fpdfapi/fpdf_parser/cpdf_hint_tables.cpp
index eafda43965225d92bc511c84142354fde1c7f039..7442f540cc22e217e32430febf141d7a4b1714c5 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_hint_tables.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_hint_tables.cpp
@@ -185,7 +185,7 @@ FX_BOOL CPDF_HintTables::ReadPageHintTable(CFX_BitStream* hStream) {
     if (!CanReadFromBitStream(hStream, required_bits))
       return FALSE;
 
-    for (int j = 0; j < m_dwNSharedObjsArray[i]; j++)
+    for (size_t j = 0; j < m_dwNSharedObjsArray[i]; j++)

[Tom Sepez, 2016/03/25 22:31:40]

This one should be an uint32_t, though.  Its an array of them, and we're using
an element, not some abstract notion of size.  Also below.

[Wei Li, 2016/03/26 01:04:10]

Done.

       m_dwIdentifierArray.Add(hStream->GetBits(dwSharedIdBits));
   }
   hStream->ByteAlign();
@@ -385,7 +385,7 @@ IPDF_DataAvail::DocAvailStatus CPDF_HintTables::CheckPage(
 
   FX_DWORD dwIndex = 0;
   FX_DWORD dwObjNum = 0;
-  for (int j = 0; j < m_dwNSharedObjsArray[index]; ++j) {
+  for (size_t j = 0; j < m_dwNSharedObjsArray[index]; ++j) {
     dwIndex = m_dwIdentifierArray[offset + j];
     if (dwIndex >= m_dwSharedObjNumArray.GetSize())
       return IPDF_DataAvail::DataNotAvailable;