Fix uninitialized memory read in BitmapCopy test with A1 config

tests/BitmapCopyTest.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 "Test.h"
 #include "SkBitmap.h"
 #include "SkRect.h"
@@ skipping 39 matching lines @@
     if (srcOpaque.isOpaque() != dst.isOpaque()) {
         report_opaqueness(reporter, srcOpaque, dst);
     }
 }
 
 static void init_src(const SkBitmap& bitmap) {
     SkAutoLockPixels lock(bitmap);
     if (bitmap.getPixels()) {
         if (bitmap.getColorTable()) {
             sk_bzero(bitmap.getPixels(), bitmap.getSize());
+        } else if (SkBitmap::kA1_Config == bitmap.config()) {
+            // The A1 config can have uninitialized bits at the
+            // end of each row if eraseColor is used
+            memset(bitmap.getPixels(), 0xff, bitmap.getSafeSize());
         } else {
             bitmap.eraseColor(SK_ColorWHITE);
         }
     }
 }
 
 static SkColorTable* init_ctable(SkAlphaType alphaType) {
     static const SkColor colors[] = {
         SK_ColorBLACK, SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE
     };
@@ skipping 521 matching lines @@
                         false);
 
 #endif
             }
         } // for (size_t copyCase ...
     }
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("BitmapCopy", TestBitmapCopyClass, TestBitmapCopy)