[PATCH]IPv6:remove duplicate check of optlen when setsockopt with IPV6_PKTINFO option

[Yang Hongyang <yanghy@cn.fujitsu.com>]

Actually the condition (optlen == 0) is included in (optlen < sizeof(struct in6_pktinfo)),
so we do not need to check it separately.

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>

---
 net/ipv6/ipv6_sockglue.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 40f3246..e6affa7 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -399,9 +399,7 @@ sticky_done:
 	{
 		struct in6_pktinfo pkt;
 
-		if (optlen == 0)
-			goto e_inval;
-		else if (optlen < sizeof(struct in6_pktinfo) || optval == NULL)
+		if (optlen < sizeof(struct in6_pktinfo) || optval == NULL)
 			goto e_inval;
 
 		if (copy_from_user(&pkt, optval, sizeof(struct in6_pktinfo))) {
-- 
1.6.0.3
-- 
Regards
Yang Hongyang