D28075: [kstyle] Properly unregister widgets in ShadowHelper

[Vlad Zahorodnii]

zzag created this revision.
zzag added a reviewer: Plasma.
Herald added a project: Plasma.
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REVISION SUMMARY
  After a widget has been unregistered, a WinIdChange event may be sent.
  If that happens, ShadowHelper is going to try to install a shadow for
  the corresponding widget. Obviously, this is wrong.

REPOSITORY
  R31 Breeze

BRANCH
  fix-crash

REVISION DETAIL
  https://phabricator.kde.org/D28075

AFFECTED FILES
  kstyle/breezeshadowhelper.cpp

To: zzag, #plasma
Cc: plasma-devel, Orage, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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