Security fixes re getSize().

git-svn-id: http://skia.googlecode.com/svn/trunk@646 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gl/SkGL.cpp b/src/gl/SkGL.cpp
index 1fce98f..fa1e50b 100644
--- a/src/gl/SkGL.cpp
+++ b/src/gl/SkGL.cpp
@@ -222,7 +222,7 @@
 
     // always skip a full 256 number of entries, even if we memcpy'd fewer
     dst += SK_GL_SIZE_OF_PALETTE;
-    memcpy(dst, bitmap.getPixels(), bitmap.getSize());
+    memcpy(dst, bitmap.getPixels(), bitmap.getSafeSize()); // Just copy what we need.
 }
 #endif