Yay! Question included in error response.

src/libknot/nameserver/ns_proc_query.c

@@ -174,7 +174,8 @@ int ns_proc_query_err(knot_pkt_t *pkt, ns_proc_context_t *ctx)
 
 	/* Copy MsgId, opcode and RD bit. Set RCODE. */
 	knot_pkt_t *query = data->pkt;
-	memcpy(pkt->wire, query->wire, knot_pkt_question_size(query));
+	pkt->size = knot_pkt_question_size(query);
+	memcpy(pkt->wire, query->wire, pkt->size);
 	knot_wire_set_qr(pkt->wire);
 	knot_wire_set_rcode(pkt->wire, data->rcode);
 	if (knot_wire_get_rd(query->wire)) {