Freeze exception request for system-monitor

[Chris Kühl <blixtra gmail com>]

Hiya,

I'd like to request a freeze exception for a build issue in system-monitor.

When enabling the new systemd support in system-monitor one gets a
build error with systemd v43 due to a function parameter named 'class'
in a header file. This makes it incompatible with C++ since 'class' is
a C++ keyword. You'll find the bug and patch here:
https://bugzilla.gnome.org/show_bug.cgi?id=668574

Cheers,
Chris