D12825: Fix recalculating forms twice

[Albert Astals Cid]

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

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D12825

To: aheinecke, aacid
Cc: okular-devel, ngraham, aacid