D7892: Only call xcb_flush in performCompositing if we have an X11 connection

[David Edmundson]

davidedmundson accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R108 KWin

BRANCH
  composite-no-flush

REVISION DETAIL
  https://phabricator.kde.org/D7892

To: graesslin, #kwin, #plasma, davidedmundson
Cc: plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/plasma-devel/attachments/20170920/a426fd38/attachment.html>