fs/fscache/object-list.c: fix warning on 32-bit

fs/fscache/object-list.c: In function 'fscache_objlist_lookup':
fs/fscache/object-list.c:105: warning: cast to pointer from integer of different size
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/fscache/object-list.c

@@ -103,7 +103,7 @@ static struct fscache_object *fscache_objlist_lookup(loff_t *_pos)
 	/* banners (can't represent line 0 by pos 0 as that would involve
 	 * returning a NULL pointer) */
 	if (pos == 0)
-		return (struct fscache_object *) ++(*_pos);
+		return (struct fscache_object *)(long)++(*_pos);
 	if (pos < 3)
 		return (struct fscache_object *)pos;