kauth_cred_clone
kauth_cred_clone(cred, new_cred);
kauth_cred_clone(cred, new_cred);
kauth_cred_clone(cred, ncred);
kauth_cred_clone(cred, ncred);
kauth_cred_clone(p->p_cred, ncred);
kauth_cred_clone(credanon, cred);
void kauth_cred_clone(kauth_cred_t, kauth_cred_t);