SPU refactoring, step 1: Goodbye SNDDXThread.

Music doesn't continue playing anymore while the emu is paused.

Feel free to revert.

desmume/src/windows/main.cpp

@@ -1198,6 +1198,7 @@ static void StepRunLoop_Core()
 	{
 		Lock lock;
 		NDS_exec<false>();
+		SPU_Emulate_user();
 		win_sound_samplecounter = 735;
 	}
 	inFrameBoundary = true;

desmume/src/windows/snddx.cpp

@@ -70,24 +70,8 @@ static int issoundmuted;
 
 //////////////////////////////////////////////////////////////////////////////
 
-static volatile bool doterminate;
-static volatile bool terminated;
-
 extern volatile int win_sound_samplecounter;
 
-DWORD WINAPI SNDDXThread( LPVOID )
-{
-	for(;;) {
-		if(doterminate) break;
-		{
-			Lock lock;
-			SPU_Emulate_user();
-		}
-		Sleep(10);
-	}
-	terminated = true;
-	return 0;
-}
 
 int SNDDXInit(int buffersize)
 {
@@ -185,10 +169,6 @@ int SNDDXInit(int buffersize)
 	soundvolume = DSBVOLUME_MAX;
 	issoundmuted = 0;
 
-	doterminate = false;
-	terminated = false;
-	CreateThread(0,0,SNDDXThread,0,0,0);
-
 	return 0;
 }
 
@@ -198,11 +178,6 @@ void SNDDXDeInit()
 {
 	DWORD status=0;
 
-	doterminate = true;
-	while(!terminated) {
-		Sleep(1);
-	}
-
 	if (lpDSB2)
 	{
 		IDirectSoundBuffer8_GetStatus(lpDSB2, &status);