lib: don't set loaded state until seat is fetched

At the moment we set is-loaded on the user-manager
object as soon as we start fetching the seat, but
we should waiting until the seat is fetched, so
that can_switch() will return the correct value
if the caller waited until the loaded signal
to use it.

This commit changes the >= to > which I believe
was the original intention anyway.

https://bugs.freedesktop.org/show_bug.cgi?id=107298

src/libaccountsservice/act-user-manager.c

@@ -2382,7 +2382,7 @@ maybe_set_is_loaded (ActUserManager *manager)
         /* Don't set is_loaded yet unless the seat is already loaded enough
          * or failed to load.
          */
-        if (manager->priv->seat.state >= ACT_USER_MANAGER_SEAT_STATE_GET_ID) {
+        if (manager->priv->seat.state > ACT_USER_MANAGER_SEAT_STATE_GET_ID) {
                 g_debug ("ActUserManager: Seat loaded, so now setting loaded property");
         } else if (manager->priv->seat.state == ACT_USER_MANAGER_SEAT_STATE_UNLOADED) {
                 g_debug ("ActUserManager: Seat wouldn't load, so giving up on it and setting loaded property");