Make test result stable (had different result orderings, on some platforms, both

of which satisfied the ORDER BY clause).

mysql-test/t/join_outer.test

@@ -308,6 +308,7 @@ insert into t1 values (1, 2, 11), (1, 2, 7), (2, 2, 8), (1,2,9),(1,3,9);
 insert into t2 values (1, 2, 3),(2, 2, 8), (4,3,9),(3,2,10);
 select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and
 t1.m = t2.m where t1.n = 1;
+--sorted_result
 select t1.*, t2.* from t1 left join t2 on t1.n = t2.n and
 t1.m = t2.m where t1.n = 1 order by t1.o;
 drop table t1,t2;