D6817: Fix crash based on "random" destruction order

[Kevin Funk]

kfunk accepted this revision.
kfunk added a comment.
This revision is now accepted and ready to land.


  I can't reproduce the crash even without this patch anymore :\
  
  I can't reproduce it *with* this patch either. The patch makes sense given my backtrace in the bug report => ship it!

REPOSITORY
  R39 KTextEditor

REVISION DETAIL
  https://phabricator.kde.org/D6817

To: cullmann, kfunk, #frameworks
Cc: kwrite-devel
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