Fixed panic in who > /dev/full

[AntoxaBarin]

Fixes #10550 (copy of #11639)

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/misc/io-errors. tests/misc/io-errors is passing on 'main'. Maybe you have to rebase?
Skip an intermittent issue tests/date/date-locale-hour (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/pr/bounded-memory (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/tail/tail-n0f (passes in this run but fails in the 'main' branch)
Congrats! The gnu test tests/cut/cut-huge-range is now passing!

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/tty/tty-eof (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/date/resolution (passes in this run but fails in the 'main' branch)
Congrats! The gnu test tests/expand/bounded-memory is now passing!

[cakebaker]

Thanks for your PR!

[oech3]

Can we remove Error flushing stdout: No space left on device (os error 28) of

$ who >/dev/full
who: No space left on device
Error flushing stdout: No space left on device (os error 28)

too?

[AntoxaBarin]

@oech3, I didn't see this error log on my Ubuntu 24.04, I'll take a look at this. What is your OS?

[oech3]

Arch