[Bro] segmentation fault on first packet

[Vern Paxson]

I suspect this is due to an alignment issue with the connection compressor's
tricks with pointers, but I'll let Robin comment on that.

One immediate comment:

	bro -t -r test.tcpdump

-t takes an argument, so this is creating an execution trace file called
"-r" and then reading test.tcpdump as a Bro script, hence all of the
"unrecognized character" complaints.

		Vern