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 77ef8478234f668b5c42a16c74062e9e98392dfb..e9c8cfdf4b4c7a64be9a68b81a304365a836d2c6 100644 (file)
--- 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);