IFUJI Hideaki <yoshfuji@linux-ipv6.org> 1206466566 +0900
committer YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> 1206473996 +0900

[NET] NETNS: Omit seq_net_private->net without CONFIG_NET_NS.

Without CONFIG_NET_NS, no namespace other than &init_net exists,
no need to store net in seq_net_private.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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