message: strict comparison
diff: // author: Bong-Hwi Lim (bong-hwi.lim@cern.ch)
  // , Beomkyu KIM (kimb@cern.ch)
  //
  -// Last Modified Date: 2019/07/24
  +// Last Modified Date: 2019/07/25
  //
  ////////////////////////////////////////////////////////////////////////////
  @@ -801,7 +801,8 @@ Bool_t AliAnalysisTaskXi1530::GoodTracksSelection() {
  if ((centbin >= 0) && (zbin >= 0) && fsetmixing) {
  if (!goodtrackindices.size())
  ep->pop_back();
  - if (ep->size() > (int)fnMix) {
  + Int_t epsize = ep->size();
  + if (epsize > fnMix) {
  for (auto it : ep->front())
  delete it;
  ep->pop_front();
  @@ -1798,12 +1799,12 @@ void AliAnalysisTaskXi1530::FillTracks() {
  // Event Mixing
  if ((centbin >= 0) && (zbin >= 0) && fsetmixing) {
  eventpool& ep = fEMpool[centbin][zbin];
  - int epsize = ep.size();
  - if (epsize < (int)fnMix)
  + Int_t epsize = ep.size();
  + if (epsize < fnMix)
  return;
  - int nForSkipSameEvent = 0;
  + Int_t nForSkipSameEvent = 0;
  for (auto pool : ep) {
  - if ((int)nForSkipSameEvent == (epsize - 1))
  + if (nForSkipSameEvent == (epsize - 1))
  continue; // same event
  for (auto track : pool)
  trackpool.push_back((AliVTrack*)track);
  @@ -2376,12 +2377,12 @@ void AliAnalysisTaskXi1530::FillTracksAOD() {
  // Event Mixing
  if ((centbin >= 0) && (zbin >= 0) && fsetmixing) {
  eventpool& ep = fEMpool[centbin][zbin];
  - int epsize = ep.size();
  - if (epsize < (int)fnMix)
  + Int_t epsize = ep.size();
  + if (epsize < fnMix)
  return;
  - int nForSkipSameEvent = 0;
  + Int_t nForSkipSameEvent = 0;
  for (auto pool : ep) {
  - if ((int)nForSkipSameEvent == (epsize - 1))
  + if (nForSkipSameEvent == (epsize - 1))
  continue; // same event
  for (auto track : pool)
  trackpool.push_back((AliVTrack*)track);
  