Fixed behaviour change from endian fix #6197
Merged
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Resolves #6194
The issue describes a change between Pillow versions in decoding JPEG2000 images. Investigating, it was caused by #5901. In fixing the behaviour on big-endian, I unintentionally changed the behaviour on little-endian as well. This PR changes Pillow to behave as before on little-endian systems.
The test image is a cropped hopper.png saved using a modified version of Pillow.