jbd/jbd2 NULL noise

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/jbd/revoke.c b/fs/jbd/revoke.c
index ad2eacf..d5f8eee 100644
--- a/fs/jbd/revoke.c
+++ b/fs/jbd/revoke.c
@@ -173,13 +173,13 @@
 					   0,
 					   SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY,
 					   NULL);
-	if (revoke_record_cache == 0)
+	if (!revoke_record_cache)
 		return -ENOMEM;
 
 	revoke_table_cache = kmem_cache_create("revoke_table",
 					   sizeof(struct jbd_revoke_table_s),
 					   0, SLAB_TEMPORARY, NULL);
-	if (revoke_table_cache == 0) {
+	if (!revoke_table_cache) {
 		kmem_cache_destroy(revoke_record_cache);
 		revoke_record_cache = NULL;
 		return -ENOMEM;