Can't pack an empty array: ZeroDivisionError: integer modulo by zero

[fyrestone]

I am not sure if this is by design, but it would be good if blocs2 can support an empty array as well.

import numpy as np
import blosc2

print(np.__version__)
print(blosc2.__version__)

empty = np.zeros((0,), dtype=float)
blosc2.pack_tensor(empty)

Output:

1.26.4
3.0.0b4
Traceback (most recent call last):
  File "blocs2_bug2.py", line 8, in <module>
    blosc2.pack_tensor(empty)
  File "/Users/admin/.pyenv/versions/miniconda3-3.11-23.11.0-2/lib/python3.11/site-packages/blosc2/core.py", line 644, in pack_tensor
    schunk = blosc2.SChunk(chunksize=chunksize, data=arr, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/admin/.pyenv/versions/miniconda3-3.11-23.11.0-2/lib/python3.11/site-packages/blosc2/schunk.py", line 284, in __init__
    super().__init__(_schunk=sc, chunksize=chunksize, data=data, **kwargs)
  File "blosc2_ext.pyx", line 1017, in blosc2.blosc2_ext.SChunk.__init__
ZeroDivisionError: integer modulo by zero

[FrancescAlted]

Sure. PRs welcome :-)