#[unsafe(no_mangle)]pub extern "C" fn nstd_io_stdout_lock_flush(
handle: &mut NSTDStdoutLock,
) -> NSTDIOErrorAvailable on crate feature
io only.#[unsafe(no_mangle)]pub extern "C" fn nstd_io_stdout_lock_flush(
handle: &mut NSTDStdoutLock,
) -> NSTDIOErrorio only.