jbd2: use NULL instead of 0 when pointer is needed

Fixes sparse warning:

fs/jbd2/journal.c:1892:9: warning: Using plain integer as NULL pointer

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
CC: linux-ext4@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index c03d4dce4d76..bc2ff5932769 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1889,7 +1889,7 @@ static struct kmem_cache *get_slab(size_t size)
         BUG_ON(i >= JBD2_MAX_SLABS);
         if (unlikely(i < 0))
                 i = 0;
-        BUG_ON(jbd2_slab[i] == 0);
+        BUG_ON(jbd2_slab[i] == NULL);
         return jbd2_slab[i];
 }