D24413: Fix Increase/Decrease Volume shortcuts

[Carl Schwan]

ognarb added a comment.


  Since the method is only one line long, why not using lambda instead here?

REPOSITORY
  R181 Amarok

REVISION DETAIL
  https://phabricator.kde.org/D24413

To: wbauer, #amarok
Cc: ognarb, amarok-devel, #amarok
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