message: Read centrality information from AliMultSelection
diff: #include "AliCentrality.h"
  #include "AliVertex.h"
  -//#include "AliMultSelection.h"
  +#include "AliMultSelection.h"
  #include "AliESDcascade.h"
  @@ -993,19 +993,18 @@ void AliXiStarPbPb::Exec(Option_t *)
  //------------------------------------------------
  Float_t centralityV0M = -100;
  - // AliMultSelection* MultSelection =0x0;
  - // MultSelection = (AliMultSelection*)fESD->FindListObject("MultSelection");
  + AliMultSelection* MultSelection =0x0;
  + MultSelection = (AliMultSelection*)fESD->FindListObject("MultSelection");
  - fCentrality = fESD->GetCentrality();
  - centralityV0M = fCentrality->GetCentralityPercentile("V0M");
  + // fCentrality = fESD->GetCentrality();
  + // centralityV0M = fCentrality->GetCentralityPercentile("V0M");
  - /* if (MultSelection) {
  + if (MultSelection) {
  centralityV0M = MultSelection->GetMultiplicityPercentile("V0M");
  } else {
  AliInfo("Didn't find MultSelection!");
  centralityV0M = 999.;
  - }*/
  -
  + }
  ((TH1F*)fOutputList->FindObject("hCentrality"))->Fill(centralityV0M);
  