fix make_image

[pmeier]

I botched this in #7717 when moving from dtype=torch.float32 to dtype=None as default value. When passing dtype=None (or more likely don't pass dtype at all), without this fix we also pass None to get_max_value and get back

vision/torchvision/transforms/_functional_tensor.py

Lines 52 to 55 in 1402eb8

	else:
	# This is only here for completeness. This value is implicitly assumed in a lot of places so changing it is not
	# easy.
	return 1

This would be the right maximum value for floating point images, but since we have also switched to torch.uint8 as default dtype, we now request an integer tensor with bounds [0, 1) aka a full zero tensor.

[pytorch-bot]

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[NicolasHug]

Thanks philip