dmime: Don't try to create a standard audio path if the client didn't ask for one.

dlls/dmime/performance.c

@@ -945,7 +945,8 @@ static HRESULT WINAPI IDirectMusicPerformance8Impl_InitAudio(IDirectMusicPerform
 	  This->pParams.dwFeatures = dwFlags;
 	  This->pParams.clsidDefaultSynth = CLSID_DirectMusicSynthSink;
 	}
-	hr = IDirectMusicPerformance8_CreateStandardAudioPath(iface, dwDefaultPathType, dwPChannelCount, FALSE, &This->pDefaultPath);
+	if(dwDefaultPathType != 0)
+		hr = IDirectMusicPerformance8_CreateStandardAudioPath(iface, dwDefaultPathType, dwPChannelCount, FALSE, &This->pDefaultPath);
 
 	PostMessageToProcessMsgThread(This, PROCESSMSG_START);
 
@@ -1096,7 +1097,7 @@ static HRESULT WINAPI IDirectMusicPerformance8Impl_CreateStandardAudioPath(IDire
 
 	*ppNewPath = pPath;
 	
-	TRACE(" returning IDirectMusicPerformance interface at %p.\n", *ppNewPath);
+	TRACE(" returning IDirectMusicAudioPath interface at %p.\n", *ppNewPath);
 
 	return IDirectMusicAudioPath_Activate(*ppNewPath, fActivate);
 }

dlls/dmime/tests/performance.c

@@ -82,6 +82,20 @@ static HRESULT test_InitAudio(void)
 
     IDirectMusicPerformance8_Release(idmusicperformance);
 
+    hr = CoCreateInstance(&CLSID_DirectMusicPerformance, NULL,
+            CLSCTX_INPROC_SERVER, &IID_IDirectMusicPerformance8,
+            (void**)&idmusicperformance);
+    ok(hr == S_OK, "CoCreateInstance failed: %08x\n", hr);
+
+    hr = IDirectMusicPerformance8_InitAudio(idmusicperformance, NULL, NULL,
+            NULL, 0, 64, 0, NULL);
+    ok(hr == S_OK, "InitAudio failed: %08x\n", hr);
+
+    hr = IDirectMusicPerformance8_CloseDown(idmusicperformance);
+    ok(hr == S_OK, "CloseDown failed: %08x\n", hr);
+
+    IDirectMusicPerformance8_Release(idmusicperformance);
+
     return S_OK;
 }