Avoid deadlock in SkGetFallbackFamilyNameForChar().

The deaklock happened when SkFontHost::CreateTypefaceFromStream() is called
indirectly from SkGetFallbackFamilyNameForChar().

This commits a change that was submitted for review by...
wangxianzhu1 @ https://codereview.appspot.com/6654051/

Review URL: https://codereview.appspot.com/6690044

git-svn-id: http://skia.googlecode.com/svn/trunk@5956 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed