au_free_token(3) on FreeBSD
The text bc270f0049f9, as FreeBSD 7.4-RELEASE, FreeBSD 7.3-RELEASE, FreeBSD 7.2-RELEASE, FreeBSD 7.1-RELEASE, FreeBSD 7.0-RELEASE, FreeBSD 6.4-RELEASE, FreeBSD 6.3-RELEASE shipped it.
deallocate a token_t created by any of the au_to_*() BSM API functions