D9110: Cache value before loop

[David Faure]

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

REPOSITORY
  R246 Sonnet

BRANCH
  avoid_check_all_the_time

REVISION DETAIL
  https://phabricator.kde.org/D9110

To: mlaurent, dfaure, sandsmark
Cc: #frameworks