message: update pads when changed
diff: @@ -1800,6 +1800,7 @@ Int_t AliTreePlayer::nextPad(){
  /// used for Tree draw queries
  static int counter=0;
  if (!gPad) return kFALSE;
  + gPad->Update();
  counter++;
  gPad->GetMother()->cd(counter);
  if (gPad->GetNumber()<counter) counter=0;
  