make the test result independent from sizeof(void*)

mysql-test/r/myisam_mrr.result

@@ -628,9 +628,9 @@ sum(t1.b)
 1230
 show status like 'handler_mrr%';
 Variable_name	Value
-Handler_mrr_init	2
-Handler_mrr_key_refills	3
-Handler_mrr_rowid_refills	3
+Handler_mrr_init	ok
+Handler_mrr_key_refills	ok
+Handler_mrr_rowid_refills	ok
 set join_cache_level= @join_cache_level_save;
 set join_buffer_size= @join_buffer_size_save;
 drop table t0, t1;

mysql-test/t/myisam_mrr.test

@@ -313,6 +313,8 @@ set join_buffer_size=10;
 explain select sum(t1.b) from t0,t1 where t0.a=t1.a;
 flush status;
 select sum(t1.b) from t0,t1 where t0.a=t1.a;
+# the values below depend on sizeof(void*)
+--replace_result 1 ok 2 ok 3 ok
 show status like 'handler_mrr%';
 
 set join_cache_level= @join_cache_level_save;