message: fix stat error calculation after scaling
diff: @@ -289,8 +289,11 @@ static void ScaleBinBySize(TH1D* h)
  {
  Double_t width = h->GetBinWidth(ibin);
  Double_t content = h->GetBinContent(ibin);
  + Double_t error = h->GetBinError(ibin);
  +
  //printf("bin %d, width %f, content %e\n",ibin,width,content);
  h->SetBinContent(ibin,content/width);
  + h->SetBinError (ibin, error/width);
  }
  }
  