Try to fix error on some mac versions by not re-initializing string

core/detectors/trd/CbmTrdParSetGas.cxx

@@ -101,11 +101,8 @@ void CbmTrdParSetGas::putParams(FairParamList* l)
   }
   CbmTrdParModGas* mod = (CbmTrdParModGas*) fModuleMap[moduleId[0]];
 
-
-  TString repopid(mod->GetFileName().Data());
-
   l->add("RepoDrift", "parameters/trd/CbmTrdDriftMap.root");
-  l->add("RepoPid", repopid);
+  l->add("RepoPid", mod->GetFileName().Data());
   l->add("Gas", Form("Xe_%d", Int_t(1.e2 * mod->GetNobleGas())));
   l->add("NrOfModules", fNrOfModules);
   l->add("ModuleIdArray", moduleId);