message: initialize with 0 momentum
diff: @@ -1653,7 +1653,7 @@ void AliAnalysisTaskGammaHadron::FillQAHisograms(Int_t identifier,AliClusterCont
  Double_t phidiff=100;
  Double_t etadiffTrack;
  Double_t phidiffTrack;
  - Double_t mom;
  + Double_t mom=0;
  Double_t momTrack;
  //..loop over matched tracks
  for (Int_t i = 0; i < Ntrks; ++i)
  