Add a fix for a spurious assert in SkMatrixConvolutionImageFilter.
When matrix convolution processes border pixels with zero width, it
asserts in getAddr32() with an invalid x coordinate. The assert is
harmless, since the returned pointer is never accessed (the next line
is a loop from left to right, which does nothing, since left == right).
However, the fix is simple: early out on an empty rect before entering
the outer loop.
R=sugoi@chromium.org
Review URL: https://codereview.chromium.org/265693005
git-svn-id: http://skia.googlecode.com/svn/trunk/src@14497 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed
