message: trying to fix a Visual Studio compiling error
diff: @@ -209,8 +209,8 @@ void DataManReader::ReadThread(std::shared_ptr<transportman::DataMan> man)
  if (metasize > 0)
  {
  - char metastr[metasize + 1];
  - std::memcpy(metastr, buffer->data() + flagsize,
  + std::vector<char> metastr(metasize + 1);
  + std::memcpy(metastr.data(), buffer->data() + flagsize,
  metasize);
  metastr[metasize] = '\0';
  nlohmann::json metaj = nlohmann::json::parse(metastr);
  