Fixed correct device enumeration for libusb01 backend
Fixed correct device enumeration for libusb01 backend

karlp/pyusb,kopchik/pyusb,kopchik/pyusb,makerbot/pyusb,makerbot/pyusb,AlanJAS/pyusb,swinman/pyusb,swinman/pyusb,AlanJAS/pyusb,h3nj3/pyusb,karlp/pyusb,rabryan/pyusb,rabryan/pyusb,h3nj3/pyusb