message: Fix for tests on windows
diff: @@ -3468,7 +3468,7 @@ namespace {
  void wait_for(size_t expected, std::mutex& mutex, size_t& test_value)
  {
  while (true) {
  - sched_yield();
  + millisleep(1);
  std::lock_guard<std::mutex> guard(mutex);
  if (test_value == expected) {
  return;
  