xrft.pad raises a ValueError if called with pad_width=0

[cgahr]

If I call

da.sizes  # {'x': 32}
xrft.pad(da, {'x': 0})

the following value error is called:

ValueError: could not broadcast input array from shape (0,) into shape (32,)

Instead, I expect the original array to be returned, as it is for xr.pad:

da.pad({'x': 0})  # works