Reference Leak with type

Hi All ,

I found the below reference leak on master.

Steps to reproduce the issue :
--1) create type
create type float_array_typ as ( i float8);

--2) create anonymous block
postgres=# do $$
declare
a float_array_typ[];
begin
a[1].i := 11;
commit;
end
$$;
WARNING: TupleDesc reference leak: TupleDesc 0x7ff7673b15f0 (16386,-1)
still referenced
ERROR: tupdesc reference 0x7ff7673b15f0 is not owned by resource owner
TopTransaction
postgres=#

*Regards,*
Rohit