skdiff: cap return value at 255 to avoid automatic 'wrapping' (%256) of return value
Review URL: https://codereview.appspot.com/6409045

git-svn-id: http://skia.googlecode.com/svn/trunk@4629 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed