dhcp_lease_counter fix
dhcp_lease_counter fix

i broke the counter when i added the interface column.
should be ok now.
phil-davis/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,NOYB/pfsense,jxmx/pfsense,ptorsten/pfsense,jxmx/pfsense,BlackstarGroup/pfsense,ch1c4um/pfsense,pfsense/pfsense,ptorsten/pfsense,pfsense/pfsense,phil-davis/pfsense,brunostein/pfsense,jxmx/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,phil-davis/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,ptorsten/pfsense,ch1c4um/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,NOYB/pfsense,NewEraCracker/pfsense,pfsense/pfsense,dennypage/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,NOYB/pfsense,brunostein/pfsense,brunostein/pfsense,dennypage/pfsense