Userpoints Retroactive counts points for Comments twice

The comments point total is added back to the db total twice.

Once in the userpoints_retroactive_comments function,
and then again in userpoints_userpointsapi.

If you comment out line #79 in the userpoints_retroactive.module file, it fixes the bug.
(or you can use the patch provided - it does the same thing)

This problem might have alredy been addressed in the 5.x version, but I
thought I should post this fix anyway.