message: Don't join thread in CQuorum::~CQuorum when called from within the thread
diff: @@ -44,7 +44,9 @@ CQuorum::~CQuorum()
  {
  // most likely the thread is already done
  stopCachePopulatorThread = true;
  - if (cachePopulatorThread.joinable()) {
  + // watch out to not join the thread when we're called from inside the thread, which might happen on shutdown. This
  + // is because on shutdown the thread is the last owner of the shared CQuorum instance and thus the destroyer of it.
  + if (cachePopulatorThread.joinable() && cachePopulatorThread.get_id() != std::this_thread::get_id()) {
  cachePopulatorThread.join();
  }
  }
  