yaffs2: iterator variable cannot be NULL

The iterator of list_for_each() is never NULL.

Identified with coccinelle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/fs/yaffs2/yaffs_guts.c b/fs/yaffs2/yaffs_guts.c
index bbe0d70..c8b27ad 100644
--- a/fs/yaffs2/yaffs_guts.c
+++ b/fs/yaffs2/yaffs_guts.c
@@ -1872,8 +1872,8 @@
 		n += YAFFS_NOBJECT_BUCKETS;
 		list_for_each(i, &dev->obj_bucket[bucket].list) {
 			/* If there is already one in the list */
-			if (i && list_entry(i, struct yaffs_obj,
-					    hash_link)->obj_id == n) {
+			if (list_entry(i, struct yaffs_obj,
+				       hash_link)->obj_id == n) {
 				found = 0;
 				break;
 			}