Bug in Code, chapter-05 split.ply

In chapter-5, B13346_05_18-split.py, 
the lines - 
```
area = abs(shapefile.signed_area(utmPoints))
    if area <= 100:
        w.poly([sr.shape.points])
        w.record(*list(sr.record))
```
should come inside the inner for loop. if not, the splitted shapefile will have only one record. 