stop IE6-8 from choking on `delete window.curl`
stop IE6-8 from choking on `delete window.curl`

cujojs/curl,dfd07d/curl,marian-r/curl,jaredcacurak/curl,cujojs/curl,marian-r/curl,vtex/curl,marian-r/curl,vtex/curl,djkost85/curl-1,dfd07d/curl,djkost85/curl-1,dfd07d/curl,jaredcacurak/curl,cujojs/curl,vtex/curl,runt18/curl,runt18/curl,jaredcacurak/curl,runt18/curl,djkost85/curl-1