Fix UB function problems for shaders and mask.

src/core/SkBlitter_ARGB32.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCoreBlitters.h"
 #include "SkColorPriv.h"
 #include "SkShader.h"
@@ skipping 552 matching lines @@
     const uint8_t* maskRow = (const uint8_t*)mask.getAddr(x, y);
     const size_t maskRB = mask.fRowBytes;
 
     SkPMColor* span = fBuffer;
 
     if (fXfermode) {
         SkASSERT(SkMask::kA8_Format == mask.fFormat);
         SkXfermode* xfer = fXfermode;
         do {
             shaderContext->shadeSpan(x, y, span, width);
-            xfer->xfer32((SkPMColor*)dstRow, span, width, maskRow);
+            xfer->xfer32(reinterpret_cast<SkPMColor*>(dstRow), span, width, maskRow);
             dstRow += dstRB;
             maskRow += maskRB;
             y += 1;
         } while (--height > 0);
     } else {
         do {
             shaderContext->shadeSpan(x, y, span, width);
-            proc(dstRow, maskRow, span, width);
+            proc(reinterpret_cast<SkPMColor*>(dstRow), maskRow, span, width);
             dstRow += dstRB;
             maskRow += maskRB;
             y += 1;
         } while (--height > 0);
     }
 }
 
 void SkARGB32_Shader_Blitter::blitV(int x, int y, int height, SkAlpha alpha) {
     SkASSERT(x >= 0 && y >= 0 && y + height <= fDevice.height());
 
@@ skipping 84 matching lines @@
             SkBlitRow::Proc32 proc = (255 == alpha) ? fProc32 : fProc32Blend;
             do {
                 shaderContext->shadeSpan(x, y, span, 1);
                 proc(device, span, 1, alpha);
                 y += 1;
                 device = (uint32_t*)((char*)device + deviceRB);
             } while (--height > 0);
         }
     }
 }