Function capsule_ffi::rte_intr_callback_unregister_pending

pub unsafe extern "C" fn rte_intr_callback_unregister_pending(
    intr_handle: *const rte_intr_handle, 
    cb_fn: rte_intr_callback_fn, 
    cb_arg: *mut c_void, 
    ucb_fn: rte_intr_unregister_callback_fn
) -> c_int