[master] close() fd when done (Coverity report)
[master] close() fd when done (Coverity report)

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