main.partition_innodb2 fails in buildbot with different EXPLAIN output

main.partition_innodb2 'innodb'          w1 [ fail ]

        Test ended at 2023-09-17 08:51:10

CURRENT_TEST: main.partition_innodb2

--- /mnt/buildbot/build/mariadb-11.3.0/mysql-test/main/partition_innodb2.result	2023-09-17 04:23:21.000000000 -0400

+++ /mnt/buildbot/build/mariadb-11.3.0/mysql-test/main/partition_innodb2.reject	2023-09-17 08:51:09.429117589 -0400

@@ -18,7 +18,7 @@

 explain

 delete t1, t2 from t1, t2 where t1.a=t2.a;

 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	4	Using where

+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	Using where

 1	SIMPLE	t2	ref	a	a	5	test.t1.a	1	

 delete t1, t2 from t1, t2 where t1.a=t2.a;

 drop table t1,t2;

mysqltest: Result content mismatch