Bug #15253 Partitions: no error for unlisted zeros

Description:
I define a table with a single LIST partition: "values in (5)".
Then I insert 0.
I expect an error. I don't get one.
This happens only if there is a single LIST partition.
This happens only for the value 0.
(For certain other values I get a crash, but I think that's a different bug.)

Possibly there is a relation to bug#13443 "Partitions: no error for unlisted values".

How to repeat:
mysql> create table tpm (s1 int) partition by list (s1) (partition p1 values in (5));
Query OK, 0 rows affected (0.00 sec)

mysql> insert into tpm values (0);
Query OK, 1 row affected (0.00 sec)

Tested under FC4 using a recent 5.1 pull

This bug is already fixed, it works in the latest 5.1 tree

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Additional info:

Documented as fixed in 5.1.8 changelog; bug closed.