Function mark_as_completed

crates/stdlib/src/overlapped.rs:273–278

(ov: &mut OVERLAPPED)

    }

    fn mark_as_completed(ov: &mut OVERLAPPED) {
        ov.Internal = 0;
        if !ov.hEvent.is_null() {
            unsafe { windows_sys::Win32::System::Threading::SetEvent(ov.hEvent) };
        }
    }

    fn set_from_windows_err(err: u32, vm: &VirtualMachine) -> PyBaseExceptionRef {
        let err = if err == 0 {