BTagging: Fix gcc11 warning.

Needless copy in for loop.

BTagging: Fix gcc11 warning.
Needless copy in for loop.
f076f083 · scott snyder · scott snyder · eb12b181 · f076f083
Commit f076f083 authored 4 years ago by scott snyder Committed by scott snyder 4 years ago
--- a/PhysicsAnalysis/JetTagging/JetTagAlgs/BTagging/src/HighLevelBTagAlg.cxx
+++ b/PhysicsAnalysis/JetTagging/JetTagAlgs/BTagging/src/HighLevelBTagAlg.cxx
@@ -62,7 +62,7 @@ namespace Analysis {
    CHECK( m_dec_track_mom.initialize() );

    // create and initialize write handles
-    for (const std::string key: m_jetDecorator->getDecoratorKeys()) {
+    for (const std::string& key: m_jetDecorator->getDecoratorKeys()) {
      std::string full_key = m_BTagCollectionName.key() + "." + key;
      ATH_MSG_DEBUG("Adding " << full_key);
      m_outputKeys.emplace_back(std::make_unique<SG::WriteDecorHandleKey<xAOD::BTaggingContainer>>(this, key, full_key, ""));