message: set error for bins with 0 entries correctly also for EM and TR
diff: @@ -360,7 +360,7 @@ void AliDielectronSignalExt::ProcessEM(TObjArray* const arrhist)
  fHistBackground->Rebin(fRebin);
  }
  for(Int_t ibin=1; ibin<=fHistDataPM->GetXaxis()->GetNbins(); ibin++) {
  - if(fHistDataPM->GetBinError(ibin)<1e-30 ) fHistDataPM->SetBinError(ibin, 1.);
  + if(fHistDataPM->GetBinError(ibin)<1e-30 ) fHistDataPM->SetBinError(ibin, fgkErrorZero);
  }
  //scale histograms to match integral between fScaleMin and fScaleMax
  @@ -416,7 +416,7 @@ void AliDielectronSignalExt::ProcessRotation(TObjArray* const arrhist)
  fHistBackground->Rebin(fRebin);
  }
  for(Int_t ibin=1; ibin<=fHistDataPM->GetXaxis()->GetNbins(); ibin++) {
  - if(fHistDataPM->GetBinError(ibin)<1e-30 ) fHistDataPM->SetBinError(ibin, 1.);
  + if(fHistDataPM->GetBinError(ibin)<1e-30 ) fHistDataPM->SetBinError(ibin, fgkErrorZero);
  }
  //scale histograms to match integral between fScaleMin and fScaleMax
  