message: In absence of DetPid GetTPCmomentum returns P()
diff: @@ -331,8 +331,8 @@ class AliAODTrack : public AliVTrack {
  void SetTPCsignalTunedOnData(Double_t signal) {fTPCsignalTuned = signal;}
  UShort_t GetTPCsignalN() const { return fDetPid?fDetPid->GetTPCsignalN():0; }
  virtual Bool_t GetTPCdEdxInfo( AliTPCdEdxInfo &v) const {return fDetPid?fDetPid->GetTPCdEdxInfo(v):0;}
  - Double_t GetTPCmomentum() const { return fDetPid?fDetPid->GetTPCmomentum():0.; }
  - Double_t GetTPCTgl() const { return fDetPid?fDetPid->GetTPCTgl():0.; }
  + Double_t GetTPCmomentum() const { return fDetPid?fDetPid->GetTPCmomentum() : P(); }
  + Double_t GetTPCTgl() const { return fDetPid?fDetPid->GetTPCTgl() : GetTgl(); }
  Double_t GetTOFsignal() const { return fDetPid?fDetPid->GetTOFsignal():0.; }
  Double_t GetIntegratedLength() const { return fTrackLength;}
  void SetIntegratedLength(Double_t l) {fTrackLength = l;}
  