D9950: [KUser] Check whether .face.icon is actually readable before returning it

[Aleix Pol Gonzalez]

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

REPOSITORY
  R244 KCoreAddons

REVISION DETAIL
  https://phabricator.kde.org/D9950

To: broulik, #frameworks, davidedmundson, apol
Cc: ngraham