D8314: Fix deprecation warning

[Aleix Pol Gonzalez]

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

REPOSITORY
  R39 KTextEditor

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D8314

To: kfunk, apol
Cc: #frameworks, kevinapavew, cullmann, sars, dhaumann
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