don't clamp the stopScale to 0 unless it originally exceeded the clip. This is
a tweak on the fix in 3366, but in that earlier change, I mistakenly changed
> to >=. This CL just restores the compare to >



git-svn-id: http://skia.googlecode.com/svn/trunk@3400 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed