D10995: Fix some compile warnings

[Mark Gaiser]

markg accepted this revision.
markg added a comment.
This revision is now accepted and ready to land.


  As Plasma itself depends on Qt 5.9, having Qt 5.8 in here as minimum is perfectly fine :)
  It looks OK to me. Push it.
  
  But please, no more changes on this change in phab afterwards. This review already changed way to wildly what should have been a new review request imho.

REPOSITORY
  R318 Dolphin

BRANCH
  fix-warnings (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D10995

To: rominf, markg, elvisangelaccio
Cc: chehrlic, rkflx, elvisangelaccio, #dolphin
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