D24413: Fix Increase/Decrease Volume shortcuts

[Wolfgang Bauer]

wbauer added a comment.


  In D24413#542035 <https://phabricator.kde.org/D24413#542035>, @ognarb wrote:
  
  > Since the method is only one line long, why not using lambda instead here?
  
  
  Because I couldn't get it to compile successfully, I got this error:
  In lambda function passing 'const EngineController' as 'this' argument discards qualifiers

REPOSITORY
  R181 Amarok

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

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