D9027: Make it compile with QT_NO_CAST_FROM_ASCII

[David Faure]

dfaure accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R289 KNotifications

BRANCH
  make_it_compile_with_QT_NO_CAST_FROM_ASCII

REVISION DETAIL
  https://phabricator.kde.org/D9027

To: mlaurent, dfaure
Cc: #frameworks