D23036: Fix incorrect initial tabs position for vertical tab bars

[Eike Hein]

hein accepted this revision.

REPOSITORY
  R242 Plasma Framework (Library)

REVISION DETAIL
  https://phabricator.kde.org/D23036

To: lisin, #plasma, ngraham, hein
Cc: kde-frameworks-devel, LeGast00n, michaelh, ngraham, bruns