Silence warnings
Silence warnings

Summary:
I usually get many like this:
file:///home/apol/devel/kde5/lib64/qml/org/kde/kirigami/templates/OverlaySheet.qml:150: TypeError: Type error

Reviewers: #kirigami, mart

Reviewed By: mart

Subscribers: plasma-devel

Tags: #kirigami

Differential Revision: https://phabricator.kde.org/D2776

bearsh/kirigami,bearsh/kirigami