Fix typo introduced in a previous commit
There is an extra call to setLayout(), most likely a typo.
Calling setLayout() twice on the same widget produces a warning in QtWidgets.
Add missing include.
Amends 2f94f2af.
There is an extra call to setLayout(), most likely a typo.
Calling setLayout() twice on the same widget produces a warning in QtWidgets.
Add missing include.
Amends 2f94f2af.