fix some crashes and debug smtn

gtk-helpers.go

@@ -48,8 +48,14 @@ func switchToTab(jid string, w *gtk.Window) {
 
 	scroller.SetChild(typed_tab.msgs)
 	if typed_tab.isMuc {
-		m, _ := mucmembers.Load(jid)
-		ma := m.(mucUnit)
+		m, ok := mucmembers.Load(jid)
+		if !ok {
+			return
+		}
+		ma, ok := m.(mucUnit)
+		if !ok {
+			return
+		}
 		mm := ma.Members
 		gen := gtk.NewBox(gtk.OrientationVertical, 0)
 

main.go

@@ -252,6 +252,12 @@ func main() {
 			return
 		}
 
+		e := stanza.PubSubEvent{}
+		ok = m.Get(&e)
+		if ok {
+			fmt.Println(e)
+		}
+
 		/*
 			if m.Body == "" {
 				return