D25802: Don't use obsolete qVariantFromValue

[Harald Sitter]

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

REPOSITORY
  R486 QCA Library

BRANCH
  varval

REVISION DETAIL
  https://phabricator.kde.org/D25802

To: nicolasfella, iromanov, sitter, dfaure, #frameworks