From 6da3c3e200b0c78930da3b58c4beedd194446f57 Mon Sep 17 00:00:00 2001
From: jvoisin <julien.voisin@dustri.org>
Date: Mon, 22 May 2023 17:18:43 +0200
Subject: [PATCH] Fix a gcc warning about copy

```
/home/jvoisin/dev/openmw/openmw/components/fontloader/fontloader.cpp:532:29: warning: loop variable '[key, value]' creates a copy from type 'std::pair<const int, int> const' [-Wrange-loop-construct]
            for (const auto [key, value] : additional)
                            ^
/home/jvoisin/dev/openmw/openmw/components/fontloader/fontloader.cpp:532:18: note: use reference type 'std::pair<const int, int> const &' to prevent copying
            for (const auto [key, value] : additional)
                 ^~~~~~~~~~~~~~~~~~~~~~~~~
                            &
1 warning generated.
```
---
 components/fontloader/fontloader.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/fontloader/fontloader.cpp b/components/fontloader/fontloader.cpp
index 0c2b62f821..923e699d43 100644
--- a/components/fontloader/fontloader.cpp
+++ b/components/fontloader/fontloader.cpp
@@ -529,7 +529,7 @@ namespace Gui
             additional.insert(std::make_pair(84, 0x2122)); // trademark sign
             additional.insert(std::make_pair(45, 0x2212)); // minus sign
 
-            for (const auto [key, value] : additional)
+            for (const auto& [key, value] : additional)
             {
                 if (key != i)
                     continue;