src/ucs/stats/client_server.c is broken?

[Honggang-LI]

Hi,

It seems the code is broken because the client side code can't work with the server side code. The major problem is ucs_stats_serialize binary seems just write very few data (only about 40 bytes, but about 600 bytes expected) to the file stream.

  199 ucs_status_t
  200 ucs_stats_client_send(ucs_stats_client_h client, ucs_stats_node_t *root,
 .....
  215     status = ucs_stats_serialize(stream, root, UCS_STATS_SERIALIZE_BINARY);

By the way, It seems just server side functions tested by gtest case test/gtest/ucs/test_stats.cc. So, how upstream test src/ucs/stats/client_server.c?

Thanks