to compile example streaming.cpp error under vs2022

[zack-luan]

The following code encountered an error while compiling streaming.cpp under VS2022：

template
struct std::iterator_traits<msd::blocking_iterator> {
using value_type = typename msd::blocking_iterator::value_type;
using iterator_category = std::output_iterator_tag;
};

The error message is as follows:
C2794 “reference”: not “std::iterator_traits<_Iter>” ....

following improvements be made?

template
struct std::iterator_traits<Yuanling::ThreadSafeChannelIterator> {
using value_type = typename Yuanling::ThreadSafeChannelIterator::ValueType;
using iterator_category = std::output_iterator_tag;
using reference = std::reference_wrapper;
};

[andreiavrammsd]

I'll get to this. Thank you!