Cog Audio: Change for recursive lock, fixing a deadlock on buffer resets

Audio/ThirdParty/VirtualRingBuffer/VirtualRingBuffer.h

@@ -58,7 +58,7 @@
     atomic_int writePointer;
     atomic_int bufferFilled;
     
-    NSLock *accessLock;
+    NSRecursiveLock *accessLock;
 }
 
 - (id)initWithLength:(UInt32)length;

Audio/ThirdParty/VirtualRingBuffer/VirtualRingBuffer.m

@@ -47,7 +47,7 @@ static void deallocateVirtualBuffer(void *buffer, UInt32 bufferLength);
     atomic_init(&writePointer, 0);
     atomic_init(&bufferFilled, 0);
 
-    accessLock = [[NSLock alloc] init];
+    accessLock = [[NSRecursiveLock alloc] init];
     
     return self;
 }