message: small fix for new pileup monitoring hists
diff: @@ -586,7 +586,7 @@ Bool_t AliConvEventCuts::EventIsSelected(AliVEvent *fInputEvent, AliVEvent *fMCE
  Double_t z1 = ((AliESDEvent*)fInputEvent)->GetPrimaryVertexSPD()->GetZ();
  Double_t z2 = pv->GetZ();
  Double_t distZ = z2-z1;
  - if (TMath::Abs(distZMax) < TMath::Abs(distZMax) ){
  + if (TMath::Abs(distZMax) < TMath::Abs(distZ) ){
  distZMax = distZ;
  }
  }
  @@ -3240,7 +3240,7 @@ Int_t AliConvEventCuts::IsEventAcceptedByCut(AliConvEventCuts *ReaderCuts, AliVE
  Double_t z1 = ((AliESDEvent*)InputEvent)->GetPrimaryVertexSPD()->GetZ();
  Double_t z2 = pv->GetZ();
  Double_t distZ = z2-z1;
  - if (TMath::Abs(distZMax) < TMath::Abs(distZMax) ){
  + if (TMath::Abs(distZMax) < TMath::Abs(distZ) ){
  distZMax = distZ;
  }
  }
  