message: Protection against seg fault
diff: @@ -139,7 +139,7 @@ class AliEmcalContainer : public TObject {
  Int_t GetCurrentID() const { return fCurrentID ; }
  Bool_t GetIsParticleLevel() const { return fIsParticleLevel ; }
  Int_t GetIndexFromLabel(Int_t lab) const;
  - Int_t GetNEntries() const { return fClArray->GetEntriesFast() ; }
  + Int_t GetNEntries() const { return fClArray ? fClArray->GetEntriesFast() : 0 ; }
  virtual Bool_t GetMomentum(TLorentzVector &mom, Int_t i) const = 0;
  virtual Bool_t GetAcceptMomentum(TLorentzVector &mom, Int_t i) const = 0;
  virtual Bool_t GetNextMomentum(TLorentzVector &mom) = 0;
  