Fix uninitialized memory read in BitmapCopy test with A1 config

tests/BitmapCopyTest.cpp

Index: tests/BitmapCopyTest.cpp
===================================================================
--- tests/BitmapCopyTest.cpp	(revision 11697)
+++ tests/BitmapCopyTest.cpp	(working copy)
@@ -57,6 +57,10 @@
     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);
         }