removed unnecessary locking in ns_interface_shutdown() that caused the server to deadlock on shutdown on the Alphas
removed unnecessary locking in ns_interface_shutdown() that
caused the server to deadlock on shutdown on the Alphas

pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab,each/bind9-collab,each/bind9-collab,each/bind9-collab