When the initial segment is OoO, it was recognized as retransmitted. Fix
this by remembering which frame actually contains the initial segment.
Bug: 15420
Change-Id: If63e2ff581775ff9d396a612839f1bfab30f111f
Reviewed-on: https://code.wireshark.org/review/31720
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Peter Wu <peter@lekensteyn.nl>