gtk bookmark bar: Initialize a member variable.
gtk bookmark bar: Initialize a member variable.

http://crbug.com/14067
TEST=open browser, click on other bookmarks button. It should work on the first try.

Review URL: http://codereview.chromium.org/126249

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@18578 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