From 1dc58110fe0eb13481c264bb874e3b18daffb50a Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 2 Jun 2022 16:48:53 +0200
Subject: [PATCH] Avoid unnecessary string copy

---
 src/libutil/util.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index d0d2bc02f..16e59ad33 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -718,7 +718,7 @@ inline std::string operator + (const std::string & s1, std::string_view s2)
 inline std::string operator + (std::string && s, std::string_view s2)
 {
     s.append(s2);
-    return s;
+    return std::move(s);
 }
 
 inline std::string operator + (std::string_view s1, const char * s2)