Fix for bug#58134: 'Incorrectly condition pushdown inside subquery to NDB engine'

An incorrect 'table_map' containing both the table itself, 
and possible any outer-refs if this was the last table in 
the subquery, was presented to make_cond_for_table().
      
As a pushed condition is only able to refer column from the table
the condition is pushed to, nothing else than columns from the
table itself (tab->table->map) may be refered in the pushed condition
constructed by 'push_cond= make_cond_for_table()'. 
      
Also fix a minor 'copy and paste' bug in a comment 
inside make_cond_for_table().

No testcase is possible on mainbranch as the NDB engine is not available (yet)
on mysql >= 5.5

sql/sql_select.cc

@@ -6480,7 +6480,7 @@ make_join_select(JOIN *join,SQL_SELECT *select,COND *cond)
               OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN)
           {
             COND *push_cond= 
-              make_cond_for_table(tmp, current_map, current_map);
+              make_cond_for_table(tmp, tab->table->map, tab->table->map);
             if (push_cond)
             {
               /* Push condition to handler */
@@ -13099,7 +13099,7 @@ make_cond_for_table(COND *cond, table_map tables, table_map used_table)
 	new_cond->argument_list()->push_back(fix);
       }
       /*
-	Item_cond_and do not need fix_fields for execution, its parameters
+	Item_cond_or do not need fix_fields for execution, its parameters
 	are fixed or do not need fix_fields, too
       */
       new_cond->quick_fix_field();