common/daemon_conn: add daemon_conn_wake() helper.

We've been open-coding it.

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

common/daemon_conn.c

@@ -104,3 +104,8 @@ void daemon_conn_send_fd(struct daemon_conn *dc, int fd)
 {
 	msg_enqueue_fd(&dc->out, fd);
 }
+
+void daemon_conn_wake(struct daemon_conn *dc)
+{
+	msg_wake(&dc->out);
+}

common/daemon_conn.h

@@ -57,6 +57,11 @@ void daemon_conn_clear(struct daemon_conn *dc);
  */
 void daemon_conn_send(struct daemon_conn *dc, const u8 *msg);
 
+/**
+ * daemon_conn_wake - Wake queue (fires msg_queue_cleared_cb if queue empty)
+ */
+void daemon_conn_wake(struct daemon_conn *dc);
+
 /**
  * daemon_conn_send_fd - Enqueue a file descriptor to be sent (closed after)
  */

gossipd/gossip.c

@@ -569,7 +569,7 @@ static void wake_gossip_out(struct peer *peer)
 		msg_wake(&peer->local->peer_out);
 	else if (peer->remote)
 		/* Notify the daemon_conn-write loop */
-		msg_wake(&peer->remote->out);
+		daemon_conn_wake(peer->remote);
 }
 
 static void peer_error(struct peer *peer, const char *fmt, ...)
@@ -944,7 +944,7 @@ static void handle_query_short_channel_ids(struct peer *peer, u8 *msg)
 		msg_wake(&peer->local->peer_out);
 	else
 		/* Notify the daemon_conn-write loop */
-		msg_wake(&peer->remote->out);
+		daemon_conn_wake(peer->remote);
 }
 
 static void handle_gossip_timestamp_filter(struct peer *peer, u8 *msg)