[NET]: sparse warning fixes

Fix a bunch of sparse warnings. Mostly about 0 used as
NULL pointer, and shadowed variable declarations.
One notable case was that hash size should have been unsigned.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/net/appletalk/aarp.c b/net/appletalk/aarp.c
index 92cd74973c97..6c5c6dc098ec 100644
--- a/net/appletalk/aarp.c
+++ b/net/appletalk/aarp.c
@@ -822,8 +822,6 @@ static int aarp_rcv(struct sk_buff *skb, struct net_device *dev,
                                  * address. So as a precaution flush any
                                  * entries we have for this address.
                                  */
-                                struct aarp_entry *a;
-
                                 a = __aarp_find_entry(resolved[sa.s_node %
                                                           (AARP_HASH_SIZE - 1)],
                                                       skb->dev, &sa);