check texture is not NULL to aovid segmentation fault. If the texture created by GrLockAndRefCachedBitmapTexture() is NULL, ColorTableEffect::Create will cause segmentation fault by GrAssert in src/gpu/GrTextureAccess.cpp. The simple patch checked texture to avoid segment fault, and returned a NULL effect to the caller. The caller will handle NULL effect, for example, it will set default effect.
R=bsalomon@google.com, robertphillips@google.com
Author: yunchao.he@intel.com
Review URL: https://chromiumcodereview.appspot.com/15824003
git-svn-id: http://skia.googlecode.com/svn/trunk@9287 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed