D15344: Fix isNull check for RegularArea

[Kai Uwe Broulik]

broulik added a reviewer: aacid.

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D15344

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