Missing comma on ALTER TABLE with ENUM

[MasterSalomon]

Hi,

the following statement:

ALTER TABLE `mail_template` CHANGE COLUMN `mtpl_group` `mtpl_group` ENUM('ORDER') NULL DEFAULT NULL ;

throws an exeception: "Missing comma before start of a new alter operation.".

When renamed 'ORDER' to 'TEST' parser works fine.

[niconoe-]

After a test, #485 fixes this. No matter the operation is a MODIFY or a CHANGE.