Fixed off-by-one error in hashtable calculation.
Fixed off-by-one error in hashtable calculation.

tbetbetbe/upb,tbetbetbe/upb,bsn069/upb,tempbottle/upb,tempbottle/upb,bsn069/upb,tbetbetbe/upb,bsn069/upb,tempbottle/upb,bsn069/upb,tempbottle/upb,tbetbetbe/upb,bsn069/upb,tempbottle/upb,tbetbetbe/upb