CG BitMap image needs to check for valid CGImage in a couple of places
<rdar://problem/9519348>
Created attachment 95253 [details] Patch
Comment on attachment 95253 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=95253&action=review > Source/WebCore/platform/graphics/cg/ImageCG.cpp:166 > Hopefully callers to getFirstCGImageRefOfSize() know to expect 0.
http://trac.webkit.org/changeset/87598