Don't do snd_nxt rollback optimization (rev. 1.46) for SYN packets. It causes a panic when/if snd_una is incremented elsewhere (this is a conservative change, because originally no rollback occurred for any packets at all).
Don't do snd_nxt rollback optimization (rev. 1.46) for SYN packets.
It causes a panic when/if snd_una is incremented elsewhere (this
is a conservative change, because originally no rollback occurred
for any packets at all).

Submitted by:	Vivek Sadananda Pai <vivek@imimic.com>

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