Clarify comment on handling of non-timewait TCP states in tcp_usr_detach().
Clarify comment on handling of non-timewait TCP states in
tcp_usr_detach().

MFC after:	3 months

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase