modules/tm: missing lock initialisation for async_lock

	- related to commit 5ab44c7c2fc78038302bf455ff49e374fc79550b

modules/tm/h_table.c

@@ -380,6 +380,7 @@ struct cell*  build_cell( struct sip_msg* p_msg )
 
 	init_synonym_id(new_cell);
 	init_cell_lock(  new_cell );
+	init_async_lock( new_cell );
 	t_stats_created();
 	return new_cell;