D9189: Do not crash when completion object gets destroyed underneath us

[Milian Wolff]

mwolff updated this revision to Diff 23507.
mwolff added a comment.


  write unit test and document what's going on in more detail

REPOSITORY
  R284 KCompletion

CHANGES SINCE LAST UPDATE
  https://phabricator.kde.org/D9189?vs=23473&id=23507

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D9189

AFFECTED FILES
  autotests/kcombobox_unittest.cpp
  src/kcombobox.cpp

To: mwolff, dfaure
Cc: anthonyfieroni, dfaure, #frameworks
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