[PATCH] netfilter: nfnl_hook: fix unused variable warning

From: Arnd Bergmann
Date: Wed Jul 21 2021 - 11:22:53 EST

From: Arnd Bergmann <arnd@xxxxxxxx>

The only user of this variable is in an #ifdef:

net/netfilter/nfnetlink_hook.c: In function 'nfnl_hook_entries_head':
net/netfilter/nfnetlink_hook.c:177:28: error: unused variable 'netdev' [-Werror=unused-variable]

Fixes: e2cf17d3774c ("netfilter: add new hook nfnl subsystem")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
net/netfilter/nfnetlink_hook.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/net/netfilter/nfnetlink_hook.c b/net/netfilter/nfnetlink_hook.c
index 50b4e3c9347a..202f57d17bab 100644
--- a/net/netfilter/nfnetlink_hook.c
+++ b/net/netfilter/nfnetlink_hook.c
@@ -174,7 +174,9 @@ static const struct nf_hook_entries *
nfnl_hook_entries_head(u8 pf, unsigned int hook, struct net *net, const char *dev)
const struct nf_hook_entries *hook_head = NULL;
struct net_device *netdev;

switch (pf) {