From: Magnus Jacobsson <Magnus.Jacobsson@berotec.se>
Date: Wed, 24 Aug 2022 11:00:07 +0000 (+0200)
Subject: tests: SVGAnalyzer: avoid string copy by taking reference instead
X-Git-Tag: 6.0.1~15^2~2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=776a0e1bf3f49249f87f5b0cfd66645509666ee0;p=graphviz

tests: SVGAnalyzer: avoid string copy by taking reference instead
---

diff --git a/tests/svg_analyzer.cpp b/tests/svg_analyzer.cpp
index bb352b059..8230858eb 100644
--- a/tests/svg_analyzer.cpp
+++ b/tests/svg_analyzer.cpp
@@ -147,7 +147,7 @@ void SVGAnalyzer::retrieve_graphviz_components_impl(
   if (svg_element.type == SVG::SVGElementType::Group) {
     // The SVG 'class' attribute determines which type of Graphviz element a 'g'
     // element corresponds to
-    const auto class_ = svg_element.attributes.class_;
+    const auto &class_ = svg_element.attributes.class_;
     if (class_ == "graph") {
       m_graphs.emplace_back(svg_element);
     } else if (class_ == "node") {