TT#14099 Send muc room name in push

* If a muc room has no description set, send its room name
  instead of "prosody chatroom" to provide proper context
  in push messages.

Change-Id: Id8259d69a3ebefa63da97ae0c71e39df0d558a08

plugins/mod_sipwise_pushd.lua

@@ -235,7 +235,7 @@ local function get_muc_info(stanza, caller_info)
 	end
 	room = room_host.rooms[muc['jid']];
 	if room then
-		muc['room'] = room:get_description() or 'Prosody chatroom';
+		muc['room'] = room:get_description() or muc['name'];
 		if muc_stanza then
 			muc['invite'] = format("Group chat invitation to '%s' from %s",
 				muc['room'], caller_info.display_name);