Fix a FPE in CStretchEngine::StartStretchHorz().

core/fxge/dib/dib_int.h

Index: core/fxge/dib/dib_int.h
diff --git a/core/fxge/dib/dib_int.h b/core/fxge/dib/dib_int.h
index 415362d51d30feacf821d3c4db3480c0bea04616..61533baf2cf99e51d1dde7b79b13828e29d21224 100644
--- a/core/fxge/dib/dib_int.h
+++ b/core/fxge/dib/dib_int.h
@@ -60,6 +60,7 @@ class CWeightTable {
   int m_DestMin, m_ItemSize;
   uint8_t* m_pWeightTables;
 };
+
 class CStretchEngine {
  public:
   CStretchEngine(IFX_ScanlineComposer* pDestBitmap,
@@ -70,11 +71,17 @@ class CStretchEngine {
                  const CFX_DIBSource* pSrcBitmap,
                  int flags);
   ~CStretchEngine();
+
   FX_BOOL Continue(IFX_Pause* pPause);
 
- public:
+  FX_BOOL StartStretchHorz();
+  FX_BOOL ContinueStretchHorz(IFX_Pause* pPause);
+  void StretchVert();
+
   FXDIB_Format m_DestFormat;
-  int m_DestBpp, m_SrcBpp, m_bHasAlpha;
+  int m_DestBpp;
+  int m_SrcBpp;
+  int m_bHasAlpha;
   IFX_ScanlineComposer* m_pDestBitmap;
   int m_DestWidth, m_DestHeight;
   FX_RECT m_DestClip;
@@ -83,8 +90,10 @@ class CStretchEngine {
   FX_RECT m_SrcClip;
   const CFX_DIBSource* m_pSource;
   uint32_t* m_pSrcPalette;
-  int m_SrcWidth, m_SrcHeight;
-  int m_SrcPitch, m_InterPitch;
+  int m_SrcWidth;
+  int m_SrcHeight;
+  int m_SrcPitch;
+  int m_InterPitch;
   int m_ExtraMaskPitch;
   uint8_t* m_pInterBuf;
   uint8_t* m_pExtraAlphaBuf;
@@ -92,9 +101,6 @@ class CStretchEngine {
   int m_Flags;
   CWeightTable m_WeightTable;
   int m_CurRow;
-  FX_BOOL StartStretchHorz();
-  FX_BOOL ContinueStretchHorz(IFX_Pause* pPause);
-  void StretchVert();
   int m_State;
 };