* ext/socket/socket.c (sockaddr_len): extracted from sockaddr_obj.
  (sockaddr_obj): add an argument to length of socket address.
  (socket_s_ip_address_list): call sockaddr_obj with actual socket
  address length if given, use sockaddr_len otherwise.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39240 b2dd03c8-39d4-4d8f-98ff-823fe69b080e