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

[Andreas Hartmetz]

ahartmetz added a comment.


  Maybe it is better to return an empty string in this case but I don't know. Otherwise I migh thave pushed this directly. In the case of my missing file, the returned string cas the hame of the folder <file_db_data>/00/, which generates a an error message that the file it tried to open is actually a folder...

REPOSITORY
  R165 Akonadi

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

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