Add a MutexRef class to clean up Mutex handling code

src/modules/audio/openal/Audio.cpp

@@ -36,13 +36,11 @@ Audio::PoolThread::PoolThread(Pool *pool)
 	: pool(pool)
 	, finish(false)
 {
-	mutex = thread::newMutex();
 	threadName = "AudioPool";
 }
 
 Audio::PoolThread::~PoolThread()
 {
-	delete mutex;
 }
 
 

src/modules/audio/openal/Audio.h

@@ -126,7 +126,7 @@ private:
 		volatile bool finish;
 
 		// finish lock
-		thread::Mutex *mutex;
+		love::thread::MutexRef mutex;
 
 	public:
 		PoolThread(Pool *pool);

src/modules/audio/openal/Pool.cpp

@@ -32,7 +32,6 @@ namespace openal
 Pool::Pool()
 	: sources()
 	, totalSources(0)
-	, mutex(nullptr)
 {
 	// Clear errors.
 	alGetError();
@@ -53,9 +52,6 @@ Pool::Pool()
 	if (totalSources < 4)
 		throw love::Exception("Could not generate sources.");
 
-	// Create the mutex.
-	mutex = thread::newMutex();
-
 #ifdef AL_SOFT_direct_channels
 	ALboolean hasext = alIsExtensionPresent("AL_SOFT_direct_channels");
 #endif
@@ -79,8 +75,6 @@ Pool::~Pool()
 {
 	stop();
 
-	delete mutex;
-
 	// Free all sources.
 	alDeleteSources(totalSources, sources);
 }

src/modules/audio/openal/Pool.h

@@ -124,7 +124,7 @@ private:
 
 	// Only one thread can access this object at the same time. This mutex will
 	// make sure of that.
-	thread::Mutex *mutex;
+	love::thread::MutexRef mutex;
 
 }; // Pool