D28692: Don't leak DrKonqi dialog / fix crash on wayland

[David Edmundson]

davidedmundson created this revision.
davidedmundson added a reviewer: Plasma.
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REVISION SUMMARY
  When a QApplication is in it's destructor it calls window->destroy()
  on all remaining QWindows. This deletes the platform window, whilst
  keeping the real object alive. QtWayland doesn't like this.
  
  Deleting the dialog fixes the issue. The deleteLater is fine because
  QCoreApplication teardown is magic.

TEST PLAN
  crashTest

REPOSITORY
  R871 DrKonqi

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D28692

AFFECTED FILES
  src/main.cpp

To: davidedmundson, #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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