[Bro] BuildConnVal can create a dangling pointer

[Robin Sommer]

On Tue, Aug 21, 2007 at 20:16 -0700, you wrote:

> Looks like BuildConnVal() can be called from the connection destructor
> and will set the origin to "this" and thus create a dangling pointer.

Not sure I see that. Connection's dtor unrefs conn_val so this would
need to happen after the Unref(). The only line of code after the
Unref(conn_val) which could cause further connection events to be
raised is "delete root_analyzer" (although I think it shouldn't). If
that is indeed the case, I think the better fix is to move
Unref(conn_val) to the very end of the dtor. 

Robin

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