Display libusb error code in text
Display libusb error code in text

Add the human readable version of the libusb error code. For example
-4 is LIBUSB_ERROR_NO_DEVICE.

We now have:
ccid_usb.c:1586:Multi_PollingProc() Multi_PollingProc (1/18): error -4 LIBUSB_ERROR_NO_DEVICE

LudovicRousseau/CCID,LudovicRousseau/CCID,LudovicRousseau/CCID