vxlan: hide unused local variable

A bugfix introduced a harmless warning in v4.9-rc4:

drivers/net/vxlan.c: In function 'vxlan_group_used':
drivers/net/vxlan.c:947:21: error: unused variable 'sock6' [-Werror=unused-variable]

This hides the variable inside of the same #ifdef that is
around its user. The extraneous initialization is removed
at the same time, it was accidentally introduced in the
same commit.

Fixes: c6fcc4fc5f8b ("vxlan: avoid using stale vxlan socket.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index f3c2fa3ab0d5..24532cdebb00 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -944,7 +944,9 @@ static bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev)
 {
         struct vxlan_dev *vxlan;
         struct vxlan_sock *sock4;
-        struct vxlan_sock *sock6 = NULL;
+#if IS_ENABLED(CONFIG_IPV6)
+        struct vxlan_sock *sock6;
+#endif
         unsigned short family = dev->default_dst.remote_ip.sa.sa_family;
 
         sock4 = rtnl_dereference(dev->vn4_sock);