D26811: Fix crash in variable expansion (used by external tools)

[Christoph Cullmann]

cullmann accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R39 KTextEditor

BRANCH
  fix-variable-expansion

REVISION DETAIL
  https://phabricator.kde.org/D26811

To: dhaumann, cullmann
Cc: kwrite-devel, kde-frameworks-devel, rrosch, LeGast00n, GB_2, domson, michaelh, ngraham, bruns, demsking, cullmann, sars, dhaumann
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