Fix: error when FreeGeoIP returns nil state_code.
Fix: error when FreeGeoIP returns nil state_code.

mveer99/geocoder,nerdyglasses/geocoder,gogovan/geocoder-olleh,moofish32/geocoder,rios1993/geocoder,guavapass/geocoder,Devetzis/geocoder,jaigouk/geocoder-olleh,aceunreal/geocoder,TrangPham/geocoder,crdunwel/geocoder,jaigouk/geocoder-olleh,3mundi/geocoder,boone/geocoder,sr-education/geocoder,john/geocoder,jgrciv/geocoder,gogovan/geocoder-olleh,FanaHOVA/geocoder,malandrina/geocoder,sjaveed/geocoder,jonathanleone/geocoder,epyatopal/geocoder,ankane/geocoder,mehlah/geocoder,sideci-sample/sideci-sample-geocoder,eugenehp/ruby-geocoder,tortuba/geocoder,andreamazz/geocoder,rayzeller/geocoder,AndyDangerous/geocoder,donbobka/geocoder,rdlugosz/geocoder,GermanDZ/geocoder,alexreisner/geocoder,brian-ewell/geocoder,StudioMelipone/geocoder,davydovanton/geocoder,tiramizoo/geocoder,ivanzotov/geocoder,mdebo/geocoder