netns: Use net_eq() to compare net-namespaces for optimization.

Without CONFIG_NET_NS, namespace is always &init_net.
Compiler will be able to omit namespace comparisons with this patch.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/wireless/wext.c b/net/wireless/wext.c
index 273a843..df5b388 100644
--- a/net/wireless/wext.c
+++ b/net/wireless/wext.c
@@ -1299,7 +1299,7 @@
 	struct sk_buff *skb;
 	int err;
 
-	if (dev_net(dev) != &init_net)
+	if (!net_eq(dev_net(dev), &init_net))
 		return;
 
 	skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);