libusb_hotplug_callback_handle_struct
struct libusb_hotplug_callback_handle_struct;
typedef struct libusb_hotplug_callback_handle_struct *libusb_hotplug_callback_handle;
TAILQ_HEAD(, libusb_hotplug_callback_handle_struct) hotplug_cbh;
TAILQ_ENTRY(libusb_hotplug_callback_handle_struct) entry;