Test tokudb_mariadb.mdev6657 fails in buildbot (and outside)

CURRENT_TEST: tokudb_mariadb.mdev6657

--- /usr/local/mariadb-10.1.1-linux-x86_64/mysql-test/plugin/tokudb/tokudb_mariadb/r/mdev6657.result	2014-10-06 11:54:56.000000000 +0300

+++ /usr/local/mariadb-10.1.1-linux-x86_64/mysql-test/plugin/tokudb/tokudb_mariadb/r/mdev6657.reject	2014-10-06 16:30:44.327828045 +0300

@@ -34,7 +34,7 @@

 where col1 <= 1410799999 

 order by col1 desc,col2 desc,col3 desc limit 1;

 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

-1	SIMPLE	t3	range	PRIMARY,key1	PRIMARY	4	NULL	2001	Using where; Using index

+1	SIMPLE	t3	range	PRIMARY,key1	key1	4	NULL	2001	Using where; Using index

 # The same query but the constant is bigger. 

 # The query should use range(PRIMARY), not full index scan:

 explain 

@@ -43,5 +43,5 @@

 where col1 <= 1412199999 

 order by col1 desc, col2 desc, col3 desc limit 1;

 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

-1	SIMPLE	t3	range	PRIMARY,key1	PRIMARY	4	NULL	15001	Using where; Using index

+1	SIMPLE	t3	range	PRIMARY,key1	key1	4	NULL	15001	Using where; Using index

 drop table t1,t2,t3;