D9044: Fix compile with QT_NO_CAST_FROM_ASCII

[David Faure]

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

REPOSITORY
  R309 KService

BRANCH
  fix_compile_QT_NO_CAST_FROM_ASCII

REVISION DETAIL
  https://phabricator.kde.org/D9044

To: mlaurent, dfaure
Cc: #frameworks