[Differential] [Accepted] D3191: guard against dataengine missing

[davidedmundson (David Edmundson)]

davidedmundson accepted this revision.
davidedmundson added a reviewer: davidedmundson.
This revision is now accepted and ready to land.

REPOSITORY
  rKDEPLASMAADDONS Plasma Addons

BRANCH
  arcpatch-D3191_1

REVISION DETAIL
  https://phabricator.kde.org/D3191

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: mart, #plasma, davidedmundson
Cc: davidedmundson, plasma-devel, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas
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