[EBTABLES]: Deal with the worst-case behaviour in loop checks.

No need to revisit a chain we'd already finished with during
the check for current hook.  It's either instant loop (which
we'd just detected) or a duplicate work.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Al Viro 2006-11-30 19:24:49 -08:00 committed by David S. Miller
commit 98a0824a0f