LP:1001505 - Crash on a query over a table with ZEROFILL column whose where condition contains IN predicate using this column

The following simple test case causes an assertion abort in MariaDB 5.2/5.3/5.5

CREATE TABLE t1(a INT ZEROFILL);
SELECT 1 FROM t1 WHERE t1.a IN (1, t1.a) AND t1.a=2;
DROP TABLE t1;

(see also bug #57692 from bugs.mysql.com)