582b3aacf4
With the recent port to JS6 classes, the trailing
comma after functions in the syntax of classes has
been removed.
However commit c2961f21 accidentally reintroduces
one trailing comma after a newly created function,
leading into g-s throwing an exception and not
starting anymore.
Therefore, remove this trailing comma to solve
this problem.
https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/366