Enable init'ed but unused var warning on windows for closer parity with mac/linux warnings.

src/opts/SkBlitRect_opts_SSE2.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBlitRect_opts_SSE2.h"
 #include "SkBlitRow.h"
 #include "SkColorPriv.h"
@@ skipping 100 matching lines @@
     }
 }
 
 void ColorRect32_SSE2(SkPMColor* destination,
                       int width, int height,
                       size_t rowBytes, uint32_t color) {
     if (0 == height || 0 == width || 0 == color) {
         return;
     }
     unsigned colorA = SkGetPackedA32(color);
-    if (false && 255 == colorA) { // disabled but compilable to suppress warning
+    colorA = 0; // skip below if () for now...(has been disabled since this was added in r3423).
+    if (255 == colorA) {
         if (width < 31) {
             BlitRect32_OpaqueNarrow_SSE2(destination, width, height,
                                          rowBytes, color);
         } else {
             BlitRect32_OpaqueWide_SSE2(destination, width, height,
                                        rowBytes, color);
         }
     } else {
         SkBlitRow::ColorRect32(destination, width, height, rowBytes, color);
     }
 }