From 0a0cc66e8f9eb1646b54262cf233fc8ce20389af Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@musicpd.org>
Date: Tue, 7 May 2019 19:23:01 +0200
Subject: thread/Mutex: use `using` instead of making it a derived class

Prepare the transition to std::mutex.
---
 src/playlist/PlaylistMapper.hxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/playlist/PlaylistMapper.hxx')

diff --git a/src/playlist/PlaylistMapper.hxx b/src/playlist/PlaylistMapper.hxx
index d4e5072f5..cb1af5d23 100644
--- a/src/playlist/PlaylistMapper.hxx
+++ b/src/playlist/PlaylistMapper.hxx
@@ -20,11 +20,11 @@
 #ifndef MPD_PLAYLIST_MAPPER_HXX
 #define MPD_PLAYLIST_MAPPER_HXX
 
+#include "thread/Mutex.hxx"
 #include "config.h"
 
 #include <memory>
 
-class Mutex;
 class SongEnumerator;
 class Storage;
 
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