Fix a regression with cut off images.

core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../include/fxge/fx_ge.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fpdfapi/fpdf_render.h"
@@ skipping 220 matching lines @@
         return FALSE;
     }
     m_pLineBuf = FX_Alloc(FX_BYTE, pitch.ValueOrDie());
     if (m_pColorSpace && bStdCS) {
         m_pColorSpace->EnableStdConversion(TRUE);
     }
     LoadPalette();
     if (m_bColorKey) {
         m_bpp = 32;
         m_AlphaFlag = 2;
-        FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width);
+        pitch = CalculatePitch32(m_bpp, m_Width);
         if (!pitch.IsValid()) {
             return FALSE;
         }
         m_pMaskedLine = FX_Alloc(FX_BYTE, pitch.ValueOrDie());
     }
     m_Pitch = pitch.ValueOrDie();
     if (ppMask) {
         *ppMask = LoadMask(*pMatteColor);
     }
     if (m_pColorSpace && bStdCS) {
@@ skipping 23 matching lines @@
         return 0;
     }
     m_pLineBuf = FX_Alloc(FX_BYTE, pitch.ValueOrDie());
     if (m_pColorSpace && m_bStdCS) {
         m_pColorSpace->EnableStdConversion(TRUE);
     }
     LoadPalette();
     if (m_bColorKey) {
         m_bpp = 32;
         m_AlphaFlag = 2;
-        FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width);
+        pitch = CalculatePitch32(m_bpp, m_Width);
         if (!pitch.IsValid()) {
             return 0;
         }
         m_pMaskedLine = FX_Alloc(FX_BYTE, pitch.ValueOrDie());
     }
     m_Pitch = pitch.ValueOrDie();
     return 1;
 }
 int     CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc, const CPDF_Stream* pStream, FX_BOOL bHasMask,
                                        CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources,
@@ skipping 1212 matching lines @@
 {
     return ((CPDF_ProgressiveImageLoaderHandle*)LoadHandle)->Continue(pPause);
 }
 CPDF_ImageLoader::~CPDF_ImageLoader()
 {
     if (!m_bCached) {
         delete m_pBitmap;
         delete m_pMask;
     }
 }