Update tests results, mysql-test/r/windows.result

mysql-test/r/windows.result

@@ -16,7 +16,7 @@ CREATE TABLE t1 (a int, b int);
 INSERT INTO t1 VALUES (1,1);
 EXPLAIN SELECT * FROM t1 WHERE b =  (SELECT max(2));
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	system	NULL	NULL	NULL	NULL	1	
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 2	SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 DROP TABLE t1;
 CREATE DATABASE `TESTDB`;