[Bro] Bro crash with "bro: out of memory in new"

[Vern Paxson]

> Your host ran out of memory :)
> 
> There are a couple of ways that I know of to compensate for this  
> happening regularly ...

Actually, in this case it's different.  The analyzer is reading a length
value and allocating a buffer of that size, but the length is garbage and
the analyzer is coming up with a huge value which it then tries to malloc.

		Vern