nicer code

src/dialogs.py

@@ -1391,7 +1391,7 @@ def __init__(self, account, room_jid, contact_jid, password = None, comment = No
 		
 		label_text = '<big><b>%s</b></big>' % pritext
 
-		if comment is not None and comment != '': # only if not None and not ''
+		if comment: # only if not None and not ''
 			sectext = _('Comment: %s') % comment
 			label_text += '\n\n%s' % sectext