message: fixed template argument
diff: @@ -152,7 +152,7 @@ void DataManWriter::MetadataThread(const std::string &address)
  auto request = tpm.ReceiveRequest();
  if (request && request->size() > 0)
  {
  - std::lock_guard lck(m_AggregatedMetadataMutex);
  + std::lock_guard<std::mutex> lck(m_AggregatedMetadataMutex);
  tpm.SendReply(m_AggregatedMetadata);
  }
  }
  