Capture by const &.

cms-sw · Jun 28, 2020 · 1c3c7f6 · 1c3c7f6
1 parent 02ab555
commit 1c3c7f6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/L1Trigger/L1CaloTrigger/plugins/L1EGammaCrystalsEmulatorProducer.cc b/L1Trigger/L1CaloTrigger/plugins/L1EGammaCrystalsEmulatorProducer.cc
@@ -403,7 +403,7 @@ void L1EGCrystalClusterEmulatorProducer::produce(edm::Event& iEvent, const edm::
       throw cms::Exception("L1EGCrystalClusterEmulatorProducer");
       continue;
     }
-    std::vector<HcalDetId> hcId = theTrigTowerGeometry.detIds(hit.id());
+    const std::vector<HcalDetId>& hcId = theTrigTowerGeometry.detIds(hit.id());
     if (hcId.empty()) {
       LogError("L1EGCrystalClusterEmulatorProducer")
           << "Cannot find any HCalDetId corresponding to " << hit.id() << std::endl;