lib/gssapi/acquire_cred.c:get_keytab() re-resolves file why?

[Michael B Allen <mba2000@ioplex.com>]

Why does lib/gssapi/acquire_cred.c:get_keytab() re-resolve the
gssapi_krb5_keytab?

I want to use an in memory keytab so I can load it once as root and
then setuid/gid thereby protecting it.

Mike

static krb5_error_code
get_keytab(krb5_keytab *keytab)
{
    char kt_name[256];
    krb5_error_code kret;

    HEIMDAL_MUTEX_lock(&gssapi_keytab_mutex);

    if (gssapi_krb5_keytab != NULL) {
        kret = krb5_kt_get_name(gssapi_krb5_context,
                                gssapi_krb5_keytab,
                                kt_name, sizeof(kt_name));
        if (kret == 0)
            kret = krb5_kt_resolve(gssapi_krb5_context, kt_name, keytab);
    } else
        kret = krb5_kt_default(gssapi_krb5_context, keytab);

    HEIMDAL_MUTEX_unlock(&gssapi_keytab_mutex);

    return (kret);
}