D13892: Restore compatibility of UDS::insert

[David Faure]

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

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D13892

To: jtamate, dfaure, #frameworks, aacid
Cc: kde-frameworks-devel, michaelh, ngraham, bruns