Handle '/DecodeParms': ['null']

[erezarnon]

No description provided.

[wrkhenddher]

Hello @erezarnon. Thanks for your contribution.

Would it be possible you add a simple test-case that verifies this change?

A PDF demonstrating the issue together with the citation of the PDF spec would be useful assuming the issue is not an implementation problem within pdfrw.

Thoughts @pmaupin ?

[wrkhenddher]

A search within the project found me this:

pdfrw/pdfrw/objects/pdfarray.py

Lines 23 to 32 in 388f254

	def _resolver(self, isinstance=isinstance, enumerate=enumerate,
	listiter=list.__iter__, PdfIndirect=PdfIndirect,
	resolved=_resolved, PdfNull=PdfObject('null')):
	for index, value in enumerate(list.__iter__(self)):
	if isinstance(value, PdfIndirect):
	value = value.real_value()
	if value is None:
	value = PdfNull
	self[index] = value
	self._resolve = resolved

Perhaps this is related?