module Net::ForwardedBufferedIo

Fixes for two issues by Miklós Fazekas:

* if client closes a forwarded connection, but the server is
  reading, net-ssh terminates with IOError socket closed.
* if client force closes (RST) a forwarded connection, but
  server is reading, net-ssh terminates with [an exception]

See:

http://net-ssh.lighthouseapp.com/projects/36253/tickets/7
http://github.com/net-ssh/net-ssh/tree/portfwfix