D9823: Optimize: use QMetaObject::invokeMethod with functor

[Milian Wolff]

mwolff added a comment.


  https://codereview.qt-project.org/#/c/216497/

REPOSITORY
  R244 KCoreAddons

REVISION DETAIL
  https://phabricator.kde.org/D9823

To: mwolff, dfaure, apol
Cc: #frameworks