D27345: Don't emit palette changes if the palette didn't change

[Aleix Pol Gonzalez]

apol created this revision.
apol added a reviewer: Kirigami.
Herald added a project: Kirigami.
Herald added a subscriber: plasma-devel.
apol requested review of this revision.

REVISION SUMMARY
  Should keep us from repainting objects that depend on it.

TEST PLAN
  Detected it with KObjectTracker, happens several times on every startup.

REPOSITORY
  R169 Kirigami

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D27345

AFFECTED FILES
  src/libkirigami/platformtheme.cpp

To: apol, #kirigami
Cc: plasma-devel, fbampaloukas, GB_2, domson, dkardarakos, ngraham, apol, ahiemstra, davidedmundson, mart, hein
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