Fix regression！

src/test/regress/expected/single_node_rangetypes.out

@@ -922,14 +922,18 @@ drop table float8range_test;
 --
 create domain mydomain as int4;
 create type mydomainrange as range(subtype=mydomain);
-ERROR:  type "mydomain" does not exist
 select '[4,50)'::mydomainrange @> 7::mydomain;
-ERROR:  type "mydomainrange" does not exist
-LINE 1: select '[4,50)'::mydomainrange @> 7::mydomain;
-                         ^
+ ?column? 
+----------
+ t
+(1 row)
+
 drop domain mydomain;  -- fail
+ERROR:  cannot drop type mydomain because other objects depend on it
+DETAIL:  type mydomainrange depends on type mydomain
+HINT:  Use DROP ... CASCADE to drop the dependent objects too.
 drop domain mydomain cascade;
-ERROR:  type "mydomain" does not exist
+NOTICE:  drop cascades to type mydomainrange
 --
 -- Test domains over range types
 --