Merge pull request #6892 from Crypt-iQ/iss6882_notifywhenonline_fix

server.go: add peerChan to peerConnectedListeners in NotifyWhenOnline

docs/release-notes/release-notes-0.15.2.md

@@ -6,6 +6,12 @@
   (`POST /v1/graph/routes`)](https://github.com/lightningnetwork/lnd/pull/6926)
   to make it possible to specify `route_hints` over REST.
 
+## Bug Fixes
+
+* [A bug where LND wouldn't send a ChannelUpdate during a channel open has
+  been fixed.](https://github.com/lightningnetwork/lnd/pull/6892)
+
 # Contributors (Alphabetical Order)
 
+* Eugene Siegel
 * Oliver Gugger

server.go

@@ -3195,7 +3195,13 @@ func (s *server) NotifyWhenOnline(peerKey [33]byte,
 		select {
 		case <-peer.ActiveSignal():
 		case <-peer.QuitSignal():
-			// The peer quit so we'll just return.
+			// The peer quit, so we'll add the channel to the slice
+			// and return.
+			s.mu.Lock()
+			s.peerConnectedListeners[pubStr] = append(
+				s.peerConnectedListeners[pubStr], peerChan,
+			)
+			s.mu.Unlock()
 			return
 		}