D5882: Fix spacing in "Select test picture:" row

[Alexander Volkov]

volkov created this revision.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.

REVISION SUMMARY
  Use QBoxLayout::addLayout() instead of QLayout::addItem()
  to add a child layout. It's more preferable and makes Qt use a
  correct spacing for the child layout.

REPOSITORY
  R100 KGamma

BRANCH
  fix-layout-spacing

REVISION DETAIL
  https://phabricator.kde.org/D5882

AFFECTED FILES
  kcmkgamma/kgamma.cpp

To: volkov
Cc: plasma-devel, ZrenBot, spstarr, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, lukas
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