message: Converted NULL to nil for notifications (mac)
diff: @@ -254,11 +254,11 @@ BOOL manualMode = NO;
  [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self
  selector:@selector(receiveSleepNote:)
  - name:NSWorkspaceWillSleepNotification object:NULL];
  + name:NSWorkspaceWillSleepNotification object:nil];
  [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self
  selector:@selector(receiveWakeNote:)
  - name:NSWorkspaceDidWakeNotification object:NULL];
  + name:NSWorkspaceDidWakeNotification object:nil];
  [[NSUserNotificationCenter defaultUserNotificationCenter] setDelegate:self];
  