fix websockets reply status codes for client close messages
fix websockets reply status codes for client close messages

A number of autobahn WebSockets tests were failing due to replies
containing incorrect status codes. Check client status codes and reply with
correct codes.

jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws