D20441: Fix clang warnings about else after return

[Nathaniel Graham]

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

REPOSITORY
  R319 Konsole

BRANCH
  fix_color_scheme_if_chain

REVISION DETAIL
  https://phabricator.kde.org/D20441

To: tcanabrava, #konsole, hindenburg, ngraham
Cc: konsole-devel, gennad, thsurrel, ngraham, maximilianocuria, hindenburg
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