message: Fix for std=c++14 not supported error
diff: @@ -125,9 +125,6 @@ AliFemtoConfigObject::Stringify(bool pretty, int deep) const
  auto it = fValueMap.cbegin();
  - auto stringify_pair = [=] (const auto &pair) {
  - };
  -
  if (fValueMap.size() == 0) {
  return "{}";
  } else if (fValueMap.size() == 1 and !it->second.is_map()) {
  