Replace anonymous DeviceDesc field import with a named "Desc" field.

lsusb/main.go

@@ -45,7 +45,7 @@ func main() {
 		fmt.Printf("%03d.%03d %s:%s %s\n", desc.Bus, desc.Address, desc.Vendor, desc.Product, usbid.Describe(desc))
 		fmt.Printf("  Protocol: %s\n", usbid.Classify(desc))
 
-		// The configurations can be examined from the Descriptor, though they can only
+		// The configurations can be examined from the DeviceDesc, though they can only
 		// be set once the device is opened.  All configuration references must be closed,
 		// to free up the memory in libusb.
 		for _, cfg := range desc.Configs {