fixed off-by-one error which can cause major segfaultage
fixed off-by-one error which can cause major segfaultage


gegenschall/ldns,gegenschall/ldns,gegenschall/ldns,NLnetLabs/ldns,NLnetLabs/ldns,benlaurie/ldns,benlaurie/ldns,NLnetLabs/ldns,threatstack/libldns,NLnetLabs/ldns,gegenschall/ldns,threatstack/libldns,benlaurie/ldns,threatstack/libldns,benlaurie/ldns,threatstack/libldns,threatstack/libldns