after merge fix

mysql-test/r/information_schema.result

@@ -1338,7 +1338,7 @@ order by object_schema;
 explain select * from v1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	0	const row not found
-2	DERIVED	tables	ALL	NULL	NULL	NULL	NULL	2	Using filesort
+2	DERIVED	tables	ALL	NULL	NULL	NULL	NULL	0	Using filesort
 explain select * from (select table_name from information_schema.tables) as a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	0	const row not found