D7695: Fix message when the image was shared using a plugin that doesn't reply with a URL

[David Edmundson]

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

REPOSITORY
  R166 Spectacle

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D7695

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