Fix an issue found by purify with my previous submission.
Fix an issue found by purify with my previous submission.

Review URL: http://codereview.chromium.org/62122

git-svn-id: http://src.chromium.org/svn/trunk/src@13324 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9b4d648a30f120aa6158413fbbeaa8442a4c2c0d
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser