Ruby

• io.c (copy_stream_body, rb_io_s_copy_stream): move rb_fd_init()
  from copy_stream_body to rb_io_s_copy_stream. fds of passing
  rb_fd_term() have to be guaranteed initialized.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31391 b2dd03c8-39d4-4d8f-98ff-823fe69b080e