Handle possibly NULL deref in comparison
Handle possibly NULL deref in comparison

Committed on behalf of groby@chromium.org

OCL=http://codereview.appspot.com/4633058/
CID=16790,16789

Review URL: http://codereview.appspot.com/4654049

csulmone/skia,csulmone/skia,csulmone/skia,csulmone/skia