message: fix skipping mix
diff: @@ -784,7 +784,7 @@ Bool_t AliAnalysisTaskXi1530::GoodTracksSelection() {
  if (fsetmixing) {
  if (!goodtrackindices.size())
  ep->pop_back();
  - if (ep->size() > 5) {
  + if (ep->size() > (int)fnMix) {
  for (auto it : ep->front())
  delete it;
  ep->pop_front();
  @@ -1706,7 +1706,7 @@ void AliAnalysisTaskXi1530::FillTracks() {
  return;
  int nForSkipSameEvent = 0;
  for (auto pool : ep) {
  - if ((int)nForSkipSameEvent == (int)(ep.size() - 1))
  + if ((int)nForSkipSameEvent == (epsize - 1))
  continue; // same event
  for (auto track : pool)
  trackpool.push_back((AliVTrack*)track);
  @@ -2282,7 +2282,7 @@ void AliAnalysisTaskXi1530::FillTracksAOD() {
  return;
  int nForSkipSameEvent = 0;
  for (auto pool : ep) {
  - if ((int)nForSkipSameEvent == (int)(ep.size() - 1))
  + if ((int)nForSkipSameEvent == (epsize - 1))
  continue; // same event
  for (auto track : pool)
  trackpool.push_back((AliVTrack*)track);
  