[Win32] Initialize COM library on queue threads

Author: triplef

src/queue.c

@@ -6264,8 +6264,12 @@ _dispatch_worker_thread(void *context)
 static unsigned WINAPI
 _dispatch_worker_thread_thunk(LPVOID lpParameter)
 {
-  _dispatch_worker_thread(lpParameter);
-  return 0;
+	HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED | COINIT_DISABLE_OLE1DDE);
+	if (SUCCEEDED(hr)) {
+		_dispatch_worker_thread(lpParameter);
+		CoUninitialize();
+	}
+	return 0;
 }
 #endif // defined(_WIN32)
 #endif // DISPATCH_USE_PTHREAD_POOL