[ModelContextMenu] Silence warnings

Authored by broulik on Mar 30 2017, 1:03 PM.

Description

[ModelContextMenu] Silence warnings

When using a regular JavaScript Array as model and omitting certain roles (e.g. not
having a "text" for a separator) it would throw a warning.

Differential Revision: https://phabricator.kde.org/D5247

Details