message: going back to use reference in  IsRealPhoton() in header
diff: @@ -82,7 +82,7 @@ class AliAnalysisTaskSigmaPlToProtonPiZero : public AliAnalysisTaskSE
  Double_t GetQT(TLorentzVector sigmaVektor, TLorentzVector rekombinatedPi0);
  Bool_t IsRealProtonKink(AliESDkink* kink, AliStack* MCstack);
  - Bool_t IsRealPhoton(AliAODConversionPhoton PhotonCandidate, AliMCEvent* fMCEvent);
  + Bool_t IsRealPhoton(AliAODConversionPhoton *PhotonCandidate, AliMCEvent* fMCEvent);
  protected:
  AliVEvent * fEvent;
  