static void dns_transaction_flush_dnssec_transactions(DnsTransaction *t) {
        DnsTransaction *z;

        assert(t);

        while ((z = set_steal_first(t->dnssec_transactions))) {
                set_remove(z->notify_transactions, t);
                set_remove(z->notify_transactions_done, t);
                dns_transaction_gc(z);
        }
}
static void dns_transaction_flush_dnssec_transactions(DnsTransaction *t) {
        DnsTransaction *z;

        assert(t);

        while ((z = set_steal_first(t->dnssec_transactions))) {
                set_remove(z->notify_transactions, t);
                set_remove(z->notify_transactions_done, t);
                dns_transaction_gc(z);
        }
}