CSV column names not quoted in generated INSERT SQL statement, potential reserved word clash

To recreate:
- Create a test CSV file with a column name that is also an SQL reserved word, eg "Unique"
- Configure a feed to write to a Data table
- Attempt an import
Error messages such as:

user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'unique = 1' at line 1 query: SELECT * FROM feeds_data_something WHERE feed_nid = 0 AND unique = 1 in /sites/html/rmtest.sbs-online.net/htdocs/sites/all/modules/data/includes/DataHandler.inc on line 62.

Obviously (for mySQL) the issue is "unique" - my example column name - appearing in a WHERE clause without quotation marks.

Should be quite easy to fix by passing the constructed field names in quotes, but not sure of flow in code so no patch yet. (I don't know if quotes would fix it for other database vendors)

Yes, I know I am stupid for using reserved words for column names, but I was busy thinking about the business aspects of the Feed, not thinking about DB mechanics... :-)

MySQL 5.0 reserved words doco for reference:
http://dev.mysql.com/doc/refman/5.0/en/reserved-words.html