message: Remove closed file from map of transports so that we don't attempt to
  close it again
diff: @@ -459,6 +459,7 @@ void TransportMan::CloseFiles(const int transportIndex)
  CheckFile(itTransport, ", in call to CloseFiles with index " +
  std::to_string(transportIndex));
  itTransport->second->Close();
  + m_Transports.erase(itTransport);
  }
  }
  