examples: fix gtk+ 3.14 deprecation error
authorLubosz Sarnecki <lubosz@gmail.com>
Tue, 5 Aug 2014 10:07:08 +0000 (12:07 +0200)
committerTim-Philipp Müller <tim@centricular.com>
Sat, 9 Dec 2017 19:31:45 +0000 (19:31 +0000)
commitf3311f2b1e9622281527ce6331a8dc52c1619519
treed41ea31e2557457e110889305cc6dfade4394340
parente266f6517d07f7513c4d80d443445c6bb58d3349
examples: fix gtk+ 3.14 deprecation error

https://developer.gnome.org/gtk3/3.13/GtkWidget.html#gtk-widget-set-double-buffered

https://bugzilla.gnome.org/show_bug.cgi?id=734482
tests/examples/gl/gtk/switchvideooverlay/main.cpp