Fix 404 pages being loaded instead of requested url.
Fix 404 pages being loaded instead of requested url.

Once a new tab is created, it already starts loading
the requested url. Setting the same url on it while
loading doesn't work right now.

Reviewed-by: Jesus Sanchez-Palencia

snowshoe/snowshoe,snowshoe/snowshoe,qtproject/qt-apps-snowshoe,qtproject/qt-apps-snowshoe,snowshoe/snowshoe,qtproject/qt-apps-snowshoe