Fix #2 for galera.MW-336

mysql-test/suite/galera/t/MW-336.test

@@ -25,9 +25,10 @@ INSERT INTO t1 VALUES (1);
 --connection node_1
 SET GLOBAL wsrep_slave_threads = 10;
 
+# Note that above insert could be handled by one of the slave threads
 --echo # Set slave threads to 10 step 2
---let $wait_condition = SELECT VARIABLE_VALUE = 10 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_applier_thread_count';
---let $wait_condition_on_error_output = SELECT COUNT(*), 10 as EXPECTED_VALUE FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE = 'wsrep applier idle'; show processlist
+--let $wait_condition = SELECT VARIABLE_VALUE >= 9 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_applier_thread_count';
+--let $wait_condition_on_error_output = SELECT COUNT(*), 9 as EXPECTED_VALUE FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE = 'wsrep applier idle'; show processlist
 --source include/wait_condition_with_debug.inc
 
 SET GLOBAL wsrep_slave_threads = 20;