tipc: fix integer as NULL pointer sparse warnings in tipc

net/tipc/cluster.c:145:2: warning: Using plain integer as NULL pointer
net/tipc/link.c:3254:36: warning: Using plain integer as NULL pointer
net/tipc/ref.c:151:15: warning: Using plain integer as NULL pointer
net/tipc/zone.c:85:2: warning: Using plain integer as NULL pointer

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/tipc/link.c b/net/tipc/link.c
index 1b17fecee747..cefa99824c58 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -3251,7 +3251,7 @@ static void link_print(struct link *l_ptr, struct print_buf *buf,
                 if ((mod(msg_seqno(buf_msg(l_ptr->last_out)) -
                          msg_seqno(buf_msg(l_ptr->first_out)))
                      != (l_ptr->out_queue_size - 1))
-                    || (l_ptr->last_out->next != 0)) {
+                    || (l_ptr->last_out->next != NULL)) {
                         tipc_printf(buf, "\nSend queue inconsistency\n");
                         tipc_printf(buf, "first_out= %x ", l_ptr->first_out);
                         tipc_printf(buf, "next_out= %x ", l_ptr->next_out);