add 603 for now

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@12883 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/sofia.c

@@ -539,7 +539,7 @@ void sofia_event_callback(nua_event_t event,
 		break;
 	}
 
-	if ((sofia_private && sofia_private == &mod_sofia_globals.destroy_private) || (status >= 300 && status != 401 && status != 407)) {
+	if ((sofia_private && sofia_private == &mod_sofia_globals.destroy_private) || (status >= 300 && status != 401 && status != 407 && status != 603)) {
 		nua_handle_bind(nh, NULL);
 		nua_handle_destroy(nh);
 		nh = NULL;