Code review comment for lp:~hikiko/unity/unity.ui-scale-factor

474 + g_object_unref(gsettings_);
475 + g_object_unref(ubuntu_settings_);
476 + g_object_unref(usettings_);
477 + g_object_unref(lim_settings_);

Please get rid of them, we're already doing it as they're glib::Object