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-rw-r--r--sys/contrib/ipfilter/netinet/ip_compat.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/sys/contrib/ipfilter/netinet/ip_compat.h b/sys/contrib/ipfilter/netinet/ip_compat.h
index 31e5b11..35c9f68 100644
--- a/sys/contrib/ipfilter/netinet/ip_compat.h
+++ b/sys/contrib/ipfilter/netinet/ip_compat.h
@@ -975,7 +975,6 @@ typedef u_int32_t u_32_t;
# define SPL_NET(x) ;
# define SPL_IMP(x) ;
# define SPL_SCHED(x) ;
-extern int in_cksum __P((struct mbuf *, int));
# else
# define SPL_SCHED(x) x = splhigh()
# endif /* __FreeBSD_version >= 500043 */
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