FreeBSD/src 6a8ee0f (r343130)sys/netpfil/pf if_pfsync.c

pf: fix pfsync breaking carp

Fix missing initialisation of sc_flags into a valid sync state on clone which
breaks carp in pfsync.

This regression was introduce by r342051.

PR:             235005
Submitted by:   smh at FreeBSD.org
Pointy hat to:  kp
MFC after:      3 days
Differential Revision:  https://reviews.freebsd.org/D18882
DeltaFile
+1-0sys/netpfil/pf/if_pfsync.c
+1-01 files

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