Send DialPlanComplete as a response, not as a separate event.

Otherwise, it goes to all manager sessions and may exclude the current session,
if the Events mask excludes it.

(closes issue #17504)
 Reported by: rrb3942
 Patches: 
       showdialplan_patch.diff uploaded by rrb3942 (license 1003)
 Tested by: rrb3942


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@273054 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/pbx.c

@@ -6479,7 +6479,7 @@ static int manager_show_dialplan(struct mansession *s, const struct message *m)
 		return 0;
 	}
 
-	manager_event(EVENT_FLAG_CONFIG, "ShowDialPlanComplete",
+	astman_append(s, "Event: ShowDialPlanComplete\r\n"
 		"EventList: Complete\r\n"
 		"ListItems: %d\r\n"
 		"ListExtensions: %d\r\n"