D11912: Avoid emptry entries in project files filter list

[Milian Wolff]

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


  add a comment explaining why this happens, but otherwise lgtm

REPOSITORY
  R32 KDevelop

BRANCH
  fixprojectfilefilterlist

REVISION DETAIL
  https://phabricator.kde.org/D11912

To: kossebau, #kdevelop, mwolff
Cc: mwolff, kdevelop-devel
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