Multiple undef's in a list unpack only generate one in the python code

[snoopyjc]

Multiple undef's in a list unpack only generate one in the python code. For example:

(undef, undef, $i) = @arr;

Will generate:

[Null, i] = arr

[snoopyjc]

Fixed in https://github.com/snoopyjc/pythonizer