D28191: [KFontChooser] General code cleanup

[David Faure]

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

REPOSITORY
  R236 KWidgetsAddons

BRANCH
  l-kfontchooser (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D28191

To: ahmadsamir, #frameworks, cfeck, apol, bport, dfaure
Cc: kde-frameworks-devel, LeGast00n, cblack, GB_2, michaelh, ngraham, bruns
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