D20208: Fix uninitialized memory read in KZip

[David Faure]

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

REPOSITORY
  R243 KArchive

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D20208

To: aacid, dfaure
Cc: dfaure, kde-frameworks-devel, michaelh, ngraham, bruns