From bc0f9023f6c64d6e0da5bd90cba20b4caa927ef4 Mon Sep 17 00:00:00 2001
From: Dugan Chen <thedoogster@gmail.com>
Date: Mon, 22 May 2017 12:25:28 -0700
Subject: [PATCH] Add mem_fn header to oalsound.cpp

---
 src/sound/oalsound.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sound/oalsound.cpp b/src/sound/oalsound.cpp
index e9fde92636..6ee152cfdf 100644
--- a/src/sound/oalsound.cpp
+++ b/src/sound/oalsound.cpp
@@ -39,6 +39,7 @@
 #include <dlfcn.h>
 #endif
 
+#include <functional>
 #include <memory>
 #include <chrono>