Crash: Sequence functions crash on CTE alias

The following input will cause MariaDB to crash:

DROP DATABASE IF EXISTS db;

CREATE DATABASE db;

USE db;

CREATE TABLE t (id INT PRIMARY KEY, p INT, o INT, v INT);

INSERT INTO t VALUES (1,1,1,1);

SELECT ROW_NUMBER() OVER (ORDER BY id) AS rn,

       (WITH x(x) AS (SELECT 1) SELECT LASTVAL(x)) AS seq_value

FROM t;

Stack Trace:
mariadbd(my_print_stacktrace+0x30)[0x58fe35def960]
mariadbd(handle_fatal_signal+0x1f3)[0x58fe3593b843]
/lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x7ffa72101330]
mariadbd(_ZN17Item_func_lastval7val_intEv+0x75)[0x58fe359dffe5]
mariadbd(_ZNK23Type_handler_int_result18Item_save_in_fieldEP4ItemP5Fieldb+0x26)[0x58fe35864dd6]
mariadbd(_ZN4Item13save_in_fieldEP5Fieldb+0x39)[0x58fe359666d9]
mariadbd(+0x922d80)[0x58fe3569ed80]
mariadbd(+0x91986e)[0x58fe3569586e]
mariadbd(_Z10sub_selectP4JOINP13st_join_tableb+0x225)[0x58fe35695bd5]
mariadbd(_ZN4JOIN10exec_innerEv+0xd11)[0x58fe35661e11]