add pointer

benchmarks/imaging_ecal/scripts/emcal_barrel_energy_scan_analysis_pi_e.cxx

@@ -204,7 +204,7 @@ std::tuple <double, double> extract_sampling_fraction_parameters(std::string E_l
       }
       std::cout << "efficiency cut bin: " << efficiency_cut_bin << " efficiency: " << 1. - (helectron->Integral(1,efficiency_cut_bin))/(*ngen_helectron) << std::endl;
       auto ngen_hpion = dpions.Count();
-      auto pion_suppresion = hpion->Integral(efficiency_cut_bin, nbins)/ngen_hpion;
+      auto pion_suppresion = hpion->Integral(efficiency_cut_bin, nbins)/(*ngen_hpion);
       std::cout << "pion supression: " << pion_suppresion << std::end;
     }