deepcopy function references a non-existant variable

[dhylands]

In copy.py:

micropython-lib/copy/copy.py

Line 163 in f20d89c

reductor = dispatch_table.get(cls)

the deepcopy function references the variable dispatch_table, which isn't initialized.

[harryofskyrim]

SO? The issue is still present, and it's really unpleasant

[dhylands]

I just reported this on pfalcon's repository which is the "official" source of this repository.
pfalcon/pycopy-lib#26