Handle case when PdfWriter._sweep_indirect_references returns None.

py-pdf · Jul 5, 2022 · b17baef · b17baef
1 parent 36aa111
commit b17baef
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/PyPDF2/_writer.py b/PyPDF2/_writer.py
@@ -926,6 +926,8 @@ def _sweep_indirect_references(
                         hash_value = None
                         if newobj is not None:
                             hash_value = newobj.hash_value()
+                        else:
+                            newobj = NullObject()
                         # Check if object is already added to pdf.
                         if hash_value in self._idnum_hash:
                             newobj_ido = IndirectObject(