main.stat_tables_par_innodb failed in buildbot with wrong rounding

main.stat_tables_par_innodb 'innodb_plugin' w2 [ fail ]

        Test ended at 2017-10-08 22:55:36

CURRENT_TEST: main.stat_tables_par_innodb

--- /home/buildbot/maria-slave/power8-vlp06-bintar-debug/build/mysql-test/r/stat_tables_par_innodb.result	2017-10-08 21:08:14.241016486 -0400

+++ /home/buildbot/maria-slave/power8-vlp06-bintar-debug/build/mysql-test/r/stat_tables_par_innodb.reject	2017-10-08 22:55:34.951543256 -0400

@@ -56,7 +56,7 @@

 and l_discount between 0.06 - 0.01 and 0.06 + 0.01

 and l_quantity < 24;

 revenue

-77949.91860000002

+77949.9186

 set debug_sync='statistics_mem_alloc_start1  WAIT_FOR second_thread_started_too';

 set debug_sync='statistics_mem_alloc_start2  SIGNAL first_thread_working';

 use dbt3_s001;

mysqltest: Result length mismatch