D19919: Fix crash on closing

Aleix Pol Gonzalez <[email protected]>
Newsgroups gmane.comp.kde.devel.kwin
Message-ID <[email protected]> 
apol created this revision.
apol added reviewers: Plasma, KWin, mart.
Herald added a project: KWin.
Herald added a subscriber: kwin.
apol requested review of this revision.

TEST PLAN
  Start in windowed mode, close. Doesn't crash anymore.

REPOSITORY
  R108 KWin

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D19919

AFFECTED FILES
  virtualkeyboard.cpp

To: apol, #plasma, #kwin, mart
Cc: kwin, jraleigh, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, ngraham, alexeymin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart
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