[PATCH] bcache: use NULL instead of using plain integer as pointer

[Yang Li]

This fixes the following sparse warnings:
drivers/md/bcache/features.c:22:16: warning: Using plain integer as NULL
pointer

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Yang Li <yang....@linux.alibaba.com>
---
 drivers/md/bcache/features.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/bcache/features.c b/drivers/md/bcache/features.c
index d636b7b..6d2b7b8 100644
--- a/drivers/md/bcache/features.c
+++ b/drivers/md/bcache/features.c
@@ -19,7 +19,7 @@ struct feature {
 static struct feature feature_list[] = {
        {BCH_FEATURE_INCOMPAT, BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE,
                "large_bucket"},
-       {0, 0, 0 },
+       {0, 0, NULL },
 };
 
 #define compose_feature_string(type)                           \
-- 
1.8.3.1