library problem

There is a problem in the library

```
from JPEGdecoder import jpeg

def draw() :
    print('decode')

jpeg('image.jpeg', callback=draw).render(32, 32)

```

```
Traceback (most recent call last):
  File "<stdin>", line 12, in <module>
  File "JPEGdecoder.py", line 613, in processFile
MemoryError: memory allocation failed, allocating 128 bytes
```