[patch] fix to BufferedImage

[graydon hoare]

Stephen Crawley <crawley@dstc.edu.au> writes:

> Here's how you write the call to ensure that you get the correct 
> overloaded method:
> 
>   samples = src.getPixels (x, y, w, h, (int[]) null);

this is the version I committed. thanks.

-graydon