Fix first run/installer test by NULL checking.
Fix first run/installer test by NULL checking.

TBR=jcampan

Review URL: http://codereview.chromium.org/52032

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@12328 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser