Fix one valgrind bug.
Fix one valgrind bug.

Review URL: http://codereview.chromium.org/668024

git-svn-id: http://src.chromium.org/svn/trunk/src@40584 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: d2e36b3240be783dbc0110949fb97e71098b3e78
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