D11116: Fix build with Qt 5.11

[Allan Sandfeld Jensen]

carewolf created this revision.
carewolf added a reviewer: mlaurent.
Restricted Application added a project: KDE PIM.
Restricted Application added a subscriber: KDE PIM.
carewolf requested review of this revision.

REVISION SUMMARY
  Include QButtonGroup since we are using it.

REPOSITORY
  R94 PIM: Message Library

REVISION DETAIL
  https://phabricator.kde.org/D11116

AFFECTED FILES
  messagecomposer/src/imagescaling/imagescalingwidget.cpp

To: carewolf, mlaurent
Cc: #kde_pim, dvasin, winterz, vkrause, mlaurent, knauss, dvratil
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kde-pim/attachments/20180307/0c3e70dd/attachment.html>