GM: fix --mismatchPath option
(currently, it doesn't actually write any files!)

TBR=rmistry

Review URL: https://codereview.chromium.org/14855005

git-svn-id: http://skia.googlecode.com/svn/trunk@8963 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed