rp4_addfree
rp4_addfree(rp, cr);
rp4_addfree(rp, cr);
rp4_addfree(rp, CRED());
rp4_addfree(rp, cr);
rp4_addfree(rp, cr);
rp4_addfree(rp, cr);
rp4_addfree(rp, cr);
extern void rp4_addfree(rnode4_t *, cred_t *);