connectd: don't received useless peer fd if we're told to send final msg.

We don't need the connection to ourselves, just to free it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

lightningd/peer_control.c

@@ -1053,9 +1053,7 @@ send_error:
 	subd_send_msg(ld->connectd,
 		      take(towire_connectd_peer_final_msg(NULL, &peer->id,
 							  error)));
-	subd_send_fd(ld->connectd, payload->peer_fd->fd);
-	/* Don't close the fd! */
-	payload->peer_fd->fd = -1;
+	tal_free(payload->peer_fd);
 }
 
 static bool