Role Export module overwrites Forum Moderator role id with every cache clear

I have installed the role_export.module to make my user roles exportable (gives machine_name field and hashes it to create the role id). And I noticed that everytime I run cache clear or cron the role id of the Forum Moderator role will get overwritten by role_export module. This causes forum_access to create another role "Forum Moderator 2" and next time cron runs, it will create "Forum Moderator 3" and so on.

Basically what was happening was, role_export module runs role_export_normalize() function which basically modifies the role id's of roles that don't match with their md5($role_machine_name). Below is a patch that will fix the issue if anyone needs.