Can't commit to gnome-control-center master branch

[Kenneth Nielsen <k nielsen81 gmail com>]

Hallo all

I can't commit to the master branch of gnome-control-center, I guess
due to a non-existent file in POTFILES.in:
xgettext: error while opening
"./../panels/sound/gvc/gvc-mixer-control.c" for reading: No such file
or directory
ERROR: xgettext failed to generate PO template file. Please consult
       error message above if there is any.

Bug report here: https://bugzilla.gnome.org/show_bug.cgi?id=695732

I hope someone can help.
\Kenneth