Do not crash the compositor when hiding a widget.
Do not crash the compositor when hiding a widget.

Change-Id: I104307b3fc8e037e3871a6cae5c1ed3587ce0998
Reviewed-by: Samuel Rødal <99126055f8d73e4355b075213322026fa8c060bd@nokia.com>

locusf/qtwayland-1,Tofee/qtwayland,Tofee/qtwayland,Tofee/qtwayland,ntanibata/qtwayland,locusf/qtwayland-1,ntanibata/qtwayland,locusf/qtwayland-1,ntanibata/qtwayland,locusf/qtwayland-1