Do not fail on no avatar data (xmpp) #1529 (#1627)

* Detect errors when working with AvatarData

* Remove not neccessary line

Co-authored-by: Wim <wim@42.be>

bridge/xmpp/xmpp.go

@@ -283,7 +283,13 @@ func (b *Bxmpp) handleXMPP() error {
 	for {
 		m, err := b.xc.Recv()
 		if err != nil {
-			return err
+			// An error together with AvatarData is non-fatal
+			switch m.(type) {
+			case xmpp.AvatarData:
+				continue
+			default:
+				return err
+			}
 		}
 
 		switch v := m.(type) {