D24399: Pass QDir by const & instead of copy

[Albert Astals Cid]

aacid closed this revision.

REPOSITORY
  R244 KCoreAddons

REVISION DETAIL
  https://phabricator.kde.org/D24399

To: aacid, dhaumann
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns