Function nginx::ASYNC_WAIT_CTX_get_changed_fds

pub unsafe extern "C" fn ASYNC_WAIT_CTX_get_changed_fds(
    ctx: *mut ASYNC_WAIT_CTX, 
    addfd: *mut c_int, 
    numaddfds: *mut size_t, 
    delfd: *mut c_int, 
    numdelfds: *mut size_t
) -> c_int