D8007: popplerextractor: don't try to guess the title if there isn't one.

[Nathaniel Graham]

ngraham edited reviewers, added: aacid; removed: Okular.

REPOSITORY
  R286 KFileMetaData

REVISION DETAIL
  https://phabricator.kde.org/D8007

To: flameeyes, #frameworks, aacid
Cc: #frameworks