Comment 1 for bug 1536843

The patch in question is actually already backported to Ubuntu: http://anonscm.debian.org/cgit/pkg-kde/qt/qtbase.git/tree/debian/patches/set_WA_OutsideWSRange_for_native_widgets.patch?h=ubuntu

That means VLC is making a wrong assumption about it not being backported and needs to be forced to skip that error.