message: correct bin errors for weighted projection in AliPerformanceEff
diff: @@ -1334,6 +1334,7 @@ TH1D* AliPerformanceEff::WeightedProjection(THnSparseF* src, Int_t axis, Int_t n
  weight += coords[weightCoords[j]] - 1;
  }
  tmp->SetBinContent(i, weight);
  + tmp->SetBinError(i, weight);
  }
  TH1D* ret = tmp->Projection(axis);
  