From 447de580ab69a4740ce8e7e20449651300117da2 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyfox@gentoo.org>
Date: Wed, 28 Oct 2020 08:51:34 +0000
Subject: [PATCH] Source/Core/Common/Config/Config.cpp: add missing <mutex>
 include

Noticed missing include as a build failure on gcc-11:

```
[ 15%] Building CXX object Source/Core/Common/CMakeFiles/common.dir/Config/Config.cpp.o
Source/Core/Common/Config/Config.cpp:23:24:
  error: 'unique_lock' in namespace 'std' does not name a template type
    23 | using WriteLock = std::unique_lock<std::shared_mutex>;
        |                        ^~~~~~~~~~~
Source/Core/Common/Config/Config.cpp:11:1:
  note: 'std::unique_lock' is defined in header '<mutex>';
  did you forget to '#include <mutex>'?
```

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
---
 Source/Core/Common/Config/Config.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Source/Core/Common/Config/Config.cpp b/Source/Core/Common/Config/Config.cpp
index 2211d0d5fb..29004787e4 100644
--- a/Source/Core/Common/Config/Config.cpp
+++ b/Source/Core/Common/Config/Config.cpp
@@ -5,6 +5,7 @@
 #include <algorithm>
 #include <list>
 #include <map>
+#include <mutex>
 #include <shared_mutex>
 
 #include "Common/Config/Config.h"