hmm, now in `libusbOpen` I am required to pass the device which I have, but also
a handle where I get a type mismatch\:
I try to pass a\:
`var devHandle: LibusbDeviceHandle` into
`discard libusbOpen(device, addr devHandle)` but that only gets me a
`ptr LibusbDeviceHandle` but not the needed
`ptr ptr LibusbDeviceHandle` - how would I create the ptr ptr in nim?