D21989: Don't show error message if sharing is cancelled by the user

[Nicolas Fella]

nicolasfella marked an inline comment as done.

REPOSITORY
  R495 Purpose Library

REVISION DETAIL
  https://phabricator.kde.org/D21989

To: nicolasfella, apol, ngraham
Cc: broulik, kde-frameworks-devel, LeGast00n, michaelh, ngraham, bruns