[Bug 264976] crontab task fail to work if stdout redirected

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264976

--- Comment #2 from Dmitry Cheshkov <dcheshkov@gmail.com> ---
Actually, problem arose with mrtg script.
in 12.3-stable the following line in the root crontab worked fine

*/5 * * * * /usr/local/bin/mrtg /usr/local/etc/mrtg/mrtg.cfg > /dev/null 2>&1

but in 13.1-stable does not. Removing of '> /dev/null 2>&1' makes mrtg working.
Also, I found, that addition of 'env LANG=C' before '/usr/local/bin/mrtg' makes
mrtg working with stdout+stderr redirection to /dev/null in 13.1-stable:

*/5 * * * * env LANG=C /usr/local/bin/mrtg /usr/local/etc/mrtg/mrtg.cfg >
/dev/null 2>&1

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