getter cleanup: Fixed code that relied on setter property.

src/knot/zone/zone-contents.c

@@ -1132,7 +1132,9 @@ static int knot_zone_contents_adjust_nodes(knot_zone_tree_t *nodes,
 	hattrie_build_index(nodes);
 	int result = knot_zone_tree_apply_inorder(nodes, callback, adjust_arg);
 
-	adjust_arg->first_node->prev = adjust_arg->previous_node;
+	if (adjust_arg->first_node) {
+		adjust_arg->first_node->prev = adjust_arg->previous_node;
+	}
 
 	return result;
 }

src/libknot/packet/pkt.c

@@ -657,9 +657,6 @@ static int knot_pkt_rr_from_wire(const uint8_t *wire, size_t *pos,
 
 	*pos += KNOT_RR_HEADER_SIZE;
 
-	dbg_packet_verb("%s: read type %u, class %u, ttl %u, rdlength %u\n",
-	                __func__, rrset->type, rrset->rclass, ttl, rdlength);
-
 	if (size - *pos < rdlength) {
 		dbg_packet("%s: not enough data to parse RDATA\n", __func__);
 		knot_dname_free(&owner, mm);