message: Make sure TPCncls!=0 before dividing by it
diff: @@ -767,7 +767,7 @@ void AliAnalysisTaskCheckESDTracks::UserExec(Option_t *)
  Int_t statusTrack=track->GetStatus();
  if(statusTrack&AliESDtrack::kITSrefit) itsRefit=kTRUE;
  UChar_t clumap=track->GetITSClusterMap();
  - Double_t chi2clus=track->GetTPCchi2()/track->GetTPCNcls();
  + Double_t chi2clus = track->GetTPCNcls() ? track->GetTPCchi2()/track->GetTPCNcls() : -999.;
  Double_t curvrelerr = TMath::Sqrt(track->GetSigma1Pt2())/track->OneOverPt();
  Bool_t spdAny=kFALSE;
  if(track->HasPointOnITSLayer(0) || track->HasPointOnITSLayer(1)) spdAny=kTRUE;
  