fix do_reserve client, deadlock...

jackd/engine.c

@@ -2591,9 +2591,14 @@ static void jack_do_client_rename ( jack_engine_t *engine, jack_request_t *req)
 static void jack_do_reserve_name ( jack_engine_t *engine, jack_request_t *req)
 {
 	jack_reserved_name_t *reservation;
-	if (jack_client_by_name (engine, req->x.reservename.name)) {
-		req->status = -1;
-		return;
+	JSList *node;
+	// check is name is free...
+	for (node = engine->clients; node; node = jack_slist_next (node)) {
+		jack_client_internal_t* client = (jack_client_internal_t*) node->data;
+		if( !strcmp( (char *)client->control->name, req->x.clientrename.newname )) {
+			req->status = -1;
+			return;
+		}
 	}
 
 	reservation = malloc( sizeof( jack_reserved_name_t ) );