Do not try to copy header to @dst and than back to ethernet in case of
pseudo_AF_HDRCMPLT:

we copy media header from mbuf to 'struct sockaddr' @dst in bpf_movein, so
mbuf already contains valid info.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@275195 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f