static void server_cache_hostname(Server *s) {
        _cleanup_free_ char *t = NULL;
        char *x;

        assert(s);

        t = gethostname_malloc();
        if (!t)
                return;

        x = strappend("_HOSTNAME=", t);
        if (!x)
                return;

        free(s->hostname_field);
        s->hostname_field = x;
}
static void server_cache_hostname(Server *s) {
        _cleanup_free_ char *t = NULL;
        char *x;

        assert(s);

        t = gethostname_malloc();
        if (!t)
                return;

        x = strappend("_HOSTNAME=", t);
        if (!x)
                return;

        free(s->hostname_field);
        s->hostname_field = x;
}