FS-6087 --resolve forgot to send IQ result when processing output to mixers

src/mod/event_handlers/mod_rayo/rayo_output_component.c

 /*
  * mod_rayo for FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
- * Copyright (C) 2013, Grasshopper
+ * Copyright (C) 2013-2014, Grasshopper
  *
  * Version: MPL 1.1
  *
@@ -182,6 +182,9 @@ static iks *start_mixer_output_component(struct rayo_actor *mixer, struct rayo_m
 	}
 	stream.write_function(&stream, "}fileman://rayo://%s", RAYO_JID(component));
 
+	/* acknowledge command */
+	rayo_component_send_start(component, iq);
+
 	rayo_component_api_execute_async(component, "conference", stream.data);
 
 	switch_safe_free(stream.data);