Update function is referring to a not existing column

Update #6107 failed with message:

Failed: ALTER TABLE {customfilter_filters} CHANGE fid `fid` TINYINT NOT NULL DEFAULT 1, ADD PRIMARY KEY (rid)

and

user warning: Key column 'rid' doesn't exist in table query: ALTER TABLE ktmss__customfilter_filters CHANGE fid `fid` TINYINT NOT NULL DEFAULT 1, ADD PRIMARY KEY (rid) in /home/ktmss/www/www/includes/database.mysql-common.inc on line 520.

seems to be a typo in the code, primary key should be `fid` not `rid`