* ext/socket/ancdata.c (bsock_sendmsg_internal): Always set
  controls_num to raise NotImplementedError appropriately.
  (bsock_recvmsg_internal): Raise NotImplementedError if
  :scm_rights=>true is given on platforms which don't have
  4.4BSD style control message.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40624 b2dd03c8-39d4-4d8f-98ff-823fe69b080e