D17315: Avoid potential nullptr access for Document use reference instead

[Stefan Brüns]

bruns added a comment.


  In D17315#370298 <https://phabricator.kde.org/D17315#370298>, @astippich wrote:
  
  > This one doesn't apply, looks like D17824 is a dependency?
  
  
  D17312 <https://phabricator.kde.org/D17312>

REPOSITORY
  R293 Baloo

REVISION DETAIL
  https://phabricator.kde.org/D17315

To: bruns, #baloo, #frameworks, astippich, ngraham
Cc: kde-frameworks-devel, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams
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