tree a4c2e016ad9245438a0d9cf7a663941ca51a6b4e
parent 64baf926eaea1d74879e6efef9df6da41a697db6
author senorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> 1398953021 +0000
committer senorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> 1398953021 +0000

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@14497 2bbb7eff-a529-9590-31e7-b0007b416f81