message: Fix covariance matrix function
diff: @@ -82,7 +82,7 @@ class AliReducedTrackInfo : public AliReducedBaseTrack {
  Int_t CaloClusterId() const {return fCaloClusterId;}
  Float_t TrackParam(Int_t iPar = 0) {return (iPar>=0 && iPar<6 ? fTrackParam[iPar] : 0.0);}
  - Float_t CovMatrix(Int_t iCov = 0) {return (iCov>=0 && iCov<22 ? fCovMatrix[iCov] : 0.0);}
  + Float_t CovMatrix(Int_t iCov = 0) {return (iCov>=0 && iCov<21 ? fCovMatrix[iCov] : 0.0);}
  Float_t MCmom(Int_t dim) {return (dim>=0 && dim<3 ? fMCMom[dim] : 0.0);}
  Float_t PtMC() {return TMath::Sqrt(fMCMom[0]*fMCMom[0]+fMCMom[1]*fMCMom[1]);}
  