message: avoid old values for tracklets
diff: @@ -1833,6 +1833,8 @@ void AliAnalysisTaskAO2Dconverter::FillEventInTF()
  tracks.fTOFSignal = NAN;
  tracks.fLength = NAN;
  tracks.fTOFExpMom = NAN;
  + tracks.fTrackTime = NAN;
  + tracks.fTrackTimeRes = NAN;
  if (fTaskMode == kMC)
  {
  