bug fix for newAdder()

Get this output
Welcome to be friends with HuSharp's Rabbit!
```python
>> let newAdder = fn(x) { fn(y) { x + y; }; };
CompiledFunction[0x140000a08a0]
>> let addTwo = newAdder(2);
CompiledFunction[0x140000a0870]
>> addTwo
CompiledFunction[0x140000a0870]
>> addTwo(1)
2
>> addTwo(2)
4
>> addTwo(3)
6
```