Update OnlineUpdateUASparser.java

Fixes 2 errors:
1) The variable "is" which is defined in a try/catch block is out of scope when it is referenced on line 73.
2) on line 68, type char is the wrong type to return for the function, which returns a String.

Here's a patch:

63a64
> 		InputStream is = null;
65c66
< 			InputStream is = url.openStream();
---
> 			 is = url.openStream();
67c68
<                 	return '0';
---
>                 	return "0"; //???