Free GList returned by tp_list_connection_managers_finish()
Free GList returned by tp_list_connection_managers_finish()

Make sure it's not leaked in tpaw_connection_managers_listed_cb()

https://bugzilla.gnome.org/show_bug.cgi?id=752938

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,Distrotech/telepathy-account-widgets