RSS2 Feed Contribution

[taf]

Hi,

I was looking at installing this mod, but then I looked in the sql install file and saw these lines:

SET @configuration_group_id=0;
SELECT (@configuration_group_id:=configuration_group_id) FROM configuration_group WHERE configuration_group_title= 'RSS Feed' LIMIT 1;
DELETE FROM configuration WHERE configuration_group_id = @configuration_group_id AND configuration_group_id != 0;
DELETE FROM configuration_group WHERE configuration_group_id = @configuration_group_id AND configuration_group_id != 0;
DELETE FROM configuration WHERE configuration_key = 'RSS_FEED_VERSION'; 

will this not just delete everything with a configuration_group_id = 0, What is this SQL for? I'm not sure why something needs to be deleted when you are installing from scratch with no previous versions installed.

Thanks for any help.