Don't die when trying to delete a nonexistent key [RT #1392]
Don't die when trying to delete a nonexistent key [RT #1392]

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