[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, 2 insertions, 2 deletions

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 8668ab3af32e..cc8d4e2a9531 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1407,7 +1407,7 @@ static struct sk_buff *mld_newpack(struct net_device *dev, int size)
         /* we assume size > sizeof(ra) here */
         skb = sock_alloc_send_skb(sk, size + LL_RESERVED_SPACE(dev), 1, &err);
 
-        if (skb == 0)
+        if (!skb)
                 return NULL;
 
         skb_reserve(skb, LL_RESERVED_SPACE(dev));
@@ -2144,7 +2144,7 @@ static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml,
         /* callers have the socket lock and a write lock on ipv6_sk_mc_lock,
          * so no other readers or writers of iml or its sflist
          */
-        if (iml->sflist == 0) {
+        if (!iml->sflist) {
                 /* any-source empty exclude case */
                 return ip6_mc_del_src(idev, &iml->addr, iml->sfmode, 0, NULL, 0);
         }