bus: Don't trigger child_updown() for rekeyed CHILD_SAs

We don't trigger it either when they are deleted individually.

src/libcharon/bus/bus.c

@@ -826,9 +826,12 @@ METHOD(bus_t, ike_updown, void,
 
 		enumerator = ike_sa->create_child_sa_enumerator(ike_sa);
 		while (enumerator->enumerate(enumerator, (void**)&child_sa))
+		{
+			if (child_sa->get_state(child_sa) != CHILD_REKEYED)
 			{
 				child_updown(this, child_sa, FALSE);
 			}
+		}
 		enumerator->destroy(enumerator);
 	}
 }