f7baed395a74779faa153c8984c6f3b9ad7b00e6,bigbluebutton-apps/src/main/java/org/bigbluebutton/conference/service/whiteboard/WhiteboardApplication.java,WhiteboardApplication,undo,#,218

Before Change


	}
			
	public void undo() {
		roomManager.getRoom(getMeetingId()).undo();

		Map<String, Object> message = new HashMap<String, Object>();		
		ClientMessage m = new ClientMessage(ClientMessage.BROADCAST, getMeetingId(), "WhiteboardUndoCommand", message);

After Change


	}
			
	public void undo() {
		String meetingID = getMeetingId();
		if (rooms.containsKey(meetingID)) {
			WhiteboardRoom room = rooms.get(meetingID);
			room.undo();

			if (room.isRecorded()) {
				recordingService.undoWBGraphic(meetingID, room.getPresentationID(), room.getPageNumber());							
			}

			Map<String, Object> message = new HashMap<String, Object>();