D9330: Fix cmake warning (with cmake >= 3.9.0)

[Laurent Montel]

mlaurent abandoned this revision.
mlaurent added a comment.


  commited in kcoreaddons

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D9330

To: mlaurent, dfaure
Cc: kossebau, flherne, #frameworks
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