Fix for potential crash in network_library (chromium-os:11861)
Fix for potential crash in network_library (chromium-os:11861)

BUG=chromium-os:11861
TEST=Test network menu

Review URL: http://codereview.chromium.org/6465028

git-svn-id: http://src.chromium.org/svn/trunk/src@74397 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 688486500669009f8fdb1c5f193d183c82c75681
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