more minor fixes for the release branch

Gerald,

You may want to consider 18053   which fixes a memory leak in the http
statistics.

It is in the tap for httpstat for tethereal    where the _reset()
function is only called once anyway while tethereal terminates   but
anyway, it is a theoretical memory leak.


You may want to look at the recent checkins to packet-tcp.c by myself
and Guy  that significantly refactors the tcp reassembly code  which
is one of the items on the roadmap for 1.0

The old code was really hairy and suboptimal which means the changes
in the three recent checkins are all fairly substantional and
intrusive.