D19931: Stylesheets seem to contain UTF-8 characters but US-ASCII is assumed while building. Setting the charset explicitly fixes the error.

[Luca Carlon]

luc4 created this revision.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
luc4 requested review of this revision.

REPOSITORY
  R98 Breeze for Gtk

REVISION DETAIL
  https://phabricator.kde.org/D19931

AFFECTED FILES
  src/gtk318/widgets/_notebook.scss
  src/gtk320/widgets/_treeview.scss

To: luc4
Cc: plasma-devel, jraleigh, GB_2, ragreen, Pitel, ZrenBot, lesliezhai, 
ali-mohamed, jensreuterberg, abetts, sebas, apol, mart