pub unsafe extern "system" fn libusb_wrap_sys_device(
context: *mut libusb_context,
sys_dev: *mut c_int,
handle: *mut *mut libusb_device_handle,
) -> c_intpub unsafe extern "system" fn libusb_wrap_sys_device(
context: *mut libusb_context,
sys_dev: *mut c_int,
handle: *mut *mut libusb_device_handle,
) -> c_int