Bug#860908: perl 5.24 segfaults during a dpkg -i of cmanager (and other packages)

[Brad Barnett]

> Can you reproduce the segfault reliably by running:
> 
>  "deb-systemd-helper unmask cgmanager.service >/dev/null"
> 
> With Perl 5.24?
> 

Hmm.

root at newoldbe:/var/cache/apt/archives# deb-systemd-helper unmask
cgmanager.service >/dev/null /usr/bin/deb-systemd-helper was not called
from dpkg. Exiting.

No segfault.

....

Now that my system is working, I just completed the apt-get -f, made sure
sysvinit was installed, removed systemd, purged it and such.

I then did a purge of cgmanager and others (they were pulled in for some
reason with sysvinit), and tried a fresh install.  It's fine.

deb-systemd-helper still says the same as the above, with no segfault.