D8968: Prevent index out of range in case of empty or malformed filename

[Andreas Hartmetz]

ahartmetz created this revision.
Restricted Application added a project: KDE PIM.
Restricted Application added a subscriber: KDE PIM.

REVISION SUMMARY
  Prevent index out of range in case of empty or malformed filename
  
  The Akonadi cache on this computer somehow has an external file missing. Without this change, the IMAP agent crashes on every attempt to start it.

REPOSITORY
  R165 Akonadi

REVISION DETAIL
  https://phabricator.kde.org/D8968

AFFECTED FILES
  src/private/externalpartstorage.cpp

To: ahartmetz
Cc: #kde_pim, dvasin, winterz, vkrause, mlaurent, knauss, dvratil
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