PC-BSD/trueos 192c95esys/netinet tcp_reass.c

This patch addresses an issue brought up by bz@ in D18968:
When TCP_REASS_LOGGING is defined, a NULL pointer dereference would happen,
if user data was received during the TCP handshake and BB logging is used.

A KASSERT is also added to detect tcp_reass() calls with illegal parameter
combinations.

Reported by:            bz@
Reviewed by:            rrs@
MFC after:              3 days
Sponsored by:           Netflix, Inc.
Differential Revision:  https://reviews.freebsd.org/D19254
DeltaFile
+19-3sys/netinet/tcp_reass.c
+19-31 files

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