Fix crash when switching playback device (#4102)

Co-authored-by: jj <[email protected]>

src/external/miniaudio.h

@@ -21473,7 +21473,9 @@ static ma_result ma_context_get_MMDevice__wasapi(ma_context* pContext, ma_device
     MA_ASSERT(pContext != NULL);
     MA_ASSERT(ppMMDevice != NULL);
 
+    ma_CoInitializeEx(pContext, NULL, MA_COINIT_VALUE);
     hr = ma_CoCreateInstance(pContext, &MA_CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, &MA_IID_IMMDeviceEnumerator, (void**)&pDeviceEnumerator);
+    ma_CoUninitialize(pContext);
     if (FAILED(hr)) {
         ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create IMMDeviceEnumerator.\n");
         return ma_result_from_HRESULT(hr);