Memory leak with unparseble trigger for startup body

CREATE TRIGGER trg1 AFTER STARTUP SET @x=1;

UPDATE mysql.event SET body='not valid sql ;;;' WHERE name='trg1';

--source include/restart_mysqld.inc

SELECT * FROM mysql.event WHERE name='trg1';

DROP TRIGGER trg1;

Warning: Internal memory accounting error of 18024 bytes

Warning: 8192 bytes lost at 0x5930a9049a60, allocated by T@0 at 0x59309de86fec, 0x59309de879f6, 0x59309cc84f8e,