Fix a minor regex bug.

Match against '.', rather than any character (how '.' is treated
in a regular expression).

Previous to this, xfermodes_8888*png matched the expression.

R=epoger@google.com

Review URL: https://codereview.chromium.org/26709003

git-svn-id: http://skia.googlecode.com/svn/trunk@11714 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed