Bug#917173: systemd 240-1 breaks Plasma

[Fanael Linithien]

Sorry, the first message accidentally got sent while I was still
writing it, intended full text below:

Installing systemd 240-1 breaks plasma-workspace: xinit
/usr/bin/startkde hangs with a black screen, with kdeinit5 stuck at
100% CPU usage. Attaching strace to kdeinit5 reveals that it's trying
to close bogus file descriptors:

[…]
close(39936688) = -1 EBADF (Bad file descriptor)
close(39936689) = -1 EBADF (Bad file descriptor)
close(39936690) = -1 EBADF (Bad file descriptor)
close(39936691) = -1 EBADF (Bad file descriptor)
close(39936692) = -1 EBADF (Bad file descriptor)
close(39936693) = -1 EBADF (Bad file descriptor)
close(39936694) = -1 EBADF (Bad file descriptor)
close(39936695) = -1 EBADF (Bad file descriptor)
[…]

Reverting to systemd, libnss-systemd, libpamsystemd and libsystemd0
version 239-15 fixes the issue.

MATE is not affected, so it actually may be a Plasma issue that
systemd just revealed.