D15842: Lower log level for X-KDE-DBus-ServiceName missing message

[Nathaniel Graham]

ngraham added a reviewer: davidedmundson.

REPOSITORY
  R297 KDED

REVISION DETAIL
  https://phabricator.kde.org/D15842

To: bruns, #frameworks, davidedmundson
Cc: kde-frameworks-devel, michaelh, ngraham, bruns