followup: fix ASAN failure of main.opt_tvc --ps

sql/sql_tvc.cc

@@ -1173,12 +1173,10 @@ bool JOIN::transform_in_predicates_into_in_subq(THD *thd)
   {
     select_lex->parsing_place= IN_WHERE;
     conds=
-      conds->transform(thd,
-		       &Item::in_predicate_to_in_subs_transformer,
-                       (uchar*) 0);
+      conds->top_level_transform(thd,
+                                 &Item::in_predicate_to_in_subs_transformer, 0);
     if (!conds)
       DBUG_RETURN(true);
-    select_lex->prep_where= conds ? conds->copy_andor_structure(thd) : 0;
     select_lex->where= conds;
   }
 
@@ -1193,13 +1191,10 @@ bool JOIN::transform_in_predicates_into_in_subq(THD *thd)
       if (table->on_expr)
       {
         table->on_expr=
-          table->on_expr->transform(thd,
-		                    &Item::in_predicate_to_in_subs_transformer,
-                                    (uchar*) 0);
+          table->on_expr->top_level_transform(thd,
+                              &Item::in_predicate_to_in_subs_transformer, 0);
 	if (!table->on_expr)
 	  DBUG_RETURN(true);
-	table->prep_on_expr= table->on_expr ?
-                             table->on_expr->copy_andor_structure(thd) : 0;
       }
     }
   }