XAudio 2.8 test fix

rpcs3/Emu/Audio/XAudio2/XAudio28Thread.cpp

@@ -20,6 +20,14 @@ void XAudio2Thread::xa28_init(void* module)
 
 	HRESULT hr = S_OK;
 
+	hr = CoInitializeEx(nullptr, COINIT_MULTITHREADED);
+	if (FAILED(hr))
+	{
+		LOG_ERROR(GENERAL, "XAudio2Thread : CoInitializeEx() failed(0x%08x)", (u32)hr);
+		Emu.Pause();
+		return;
+	}	
+
 	hr = create(&s_tls_xaudio2_instance, 0, XAUDIO2_DEFAULT_PROCESSOR);
 	if (FAILED(hr))
 	{
@@ -57,6 +65,8 @@ void XAudio2Thread::xa28_destroy()
 		s_tls_xaudio2_instance->StopEngine();
 		s_tls_xaudio2_instance->Release();
 	}
+
+	CoUninitialize();
 }
 
 void XAudio2Thread::xa28_play()