From: zhong jiang <zhongjiang@huawei.com>
Date: Thu, 20 Sep 2018 09:37:46 +0000 (+0800)
Subject: ipv6: remove redundant null pointer check before kfree_skb
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f2a2f2166af8df04cf87127b6c63f1f4c64a8430;p=openwrt%2Fstaging%2Fblogic.git

ipv6: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 77ef8478234f..e9c8cfdf4b4c 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -468,12 +468,10 @@ void inet6_destroy_sock(struct sock *sk)
 	/* Release rx options */
 
 	skb = xchg(&np->pktoptions, NULL);
-	if (skb)
-		kfree_skb(skb);
+	kfree_skb(skb);
 
 	skb = xchg(&np->rxpmtu, NULL);
-	if (skb)
-		kfree_skb(skb);
+	kfree_skb(skb);
 
 	/* Free flowlabels */
 	fl6_free_socklist(sk);