Pillow 9.2: 'NoneType' object has no attribute 'copy'

[doublex]

Testcase:

import base64, io
import PIL.Image

gif = base64.b64decode('''
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with PIL.Image.open(io.BytesIO(gif)) as img:
    assert not getattr(img,'is_animated',False)
    PIL.ImageOps.exif_transpose( img )

Console:

Traceback (most recent call last):
  File "err.py", line 17, in <module>
    PIL.ImageOps.exif_transpose( img )
  File "/home/max/.local/lib/python3.8/site-packages/PIL/ImageOps.py", line 610, in exif_transpose
    return image.copy()
  File "/home/max/.local/lib/python3.8/site-packages/PIL/Image.py", line 1150, in copy
    return self._new(self.im.copy())
AttributeError: 'NoneType' object has no attribute 'copy'

[radarhere]

Good catch. I've created PR #6455 to resolve this.