From 54e1024e54af7f8e3aca6fa88a32a4418129e658 Mon Sep 17 00:00:00 2001
From: ferris <jake@outracks.com>
Date: Fri, 14 Jun 2013 21:13:49 +0200
Subject: [PATCH] Fixed potential shutdown crash bug

---
 Chip8/Apu.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Chip8/Apu.cpp b/Chip8/Apu.cpp
index 798dc0d..54b2f89 100644
--- a/Chip8/Apu.cpp
+++ b/Chip8/Apu.cpp
@@ -15,10 +15,12 @@ Apu::~Apu()
 
 void Apu::SetAudioDriver(IAudioDriver *audioDriver)
 {
+	mutex->Lock();
 	auto oldAudioDriver = this->audioDriver;
 	if (oldAudioDriver) oldAudioDriver->SetRenderCallback(nullptr, nullptr);
 	this->audioDriver = audioDriver;
 	audioDriver->SetRenderCallback(renderCallbackRouter, this);
+	mutex->Unlock();
 }
 
 void Apu::SetBeeping(bool beeping)