[Bro] login.bro policy run-time error

[Vern Paxson]

> 1178868745.638454 /usr/local/bro/policy/login.bro, line 608 (c): run-time error, value used but not set 
> 
> I don't have packet traces so would be difficult to pin point exactly what was going on.  Let me know if you need any other details. 

Unfortunately it's hard to see how to track this one down without a trace.
There's nothing at that line in the script that points to an obvious problem.

		Vern