D10995: Fix some compile warnings

[Roman Inflianskas]

rominf created this revision.
rominf added a reviewer: Dolphin.
rominf requested review of this revision.

REPOSITORY
  R318 Dolphin

BRANCH
  fix-warnings

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

AFFECTED FILES
  src/dolphincontextmenu.cpp
  src/dolphinmainwindow.cpp
  src/kitemviews/kfileitemmodel.cpp
  src/kitemviews/kitemlistcontroller.cpp

To: rominf, #dolphin
Cc: #dolphin
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