D22729: KZip::openArchive: Return false instead of asserting in broken files

[Aleix Pol Gonzalez]

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

REPOSITORY
  R243 KArchive

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D22729

To: aacid, apol
Cc: kde-frameworks-devel, dfaure, apol, LeGast00n, sbergeron, michaelh, 
ngraham, bruns