D20832: Fix some clazy warning

[Laurent Montel]

mlaurent added a comment.


  new ping :)

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D20832

To: mlaurent, aacid
Cc: okular-devel, joaonetto, tfella, ngraham, darcyshen, aacid
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