[PATCH net-next] ath6kl: fix warning for using 0 as NULL

[Wei Yongjun]

From: Wei Yongjun <weiyongj...@huawei.com>

Fixes the following sparse warning:

drivers/net/wireless/ath/ath6kl/sdio.c:716:55: warning:
 Using plain integer as NULL pointer

Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/net/wireless/ath/ath6kl/sdio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c 
b/drivers/net/wireless/ath/ath6kl/sdio.c
index 8ec66e7..2195b1b 100644
--- a/drivers/net/wireless/ath/ath6kl/sdio.c
+++ b/drivers/net/wireless/ath/ath6kl/sdio.c
@@ -713,7 +713,7 @@ static void ath6kl_sdio_cleanup_scatter(struct ath6kl *ar)
                 * that the packet is properly freed?
                 */
                if (s_req->busrequest) {
-                       s_req->busrequest->scat_req = 0;
+                       s_req->busrequest->scat_req = NULL;
                        ath6kl_sdio_free_bus_req(ar_sdio, s_req->busrequest);
                }
                kfree(s_req->virt_dma_buf);