Do not update the mask if we do not have a surface

mMask serves as a cache to remember what we've sent, the source of truth
for the value is window()->mask().
No need to store values that we are going to discard, because it will
confuse the state of newly created windows.

Change-Id: I6aa3da82c7f09c7ef90d0f7060f292fb042730f0
Reviewed-by: David Edmundson <davidedmundson@kde.org>
(cherry picked from commit 962f87190c682562b369c5ebd93dc9ce0915ed7a)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions