gcmt/breeze.vim — pull request #3 by someboddy (2013-07-05 19:43:44+00:00)
Title: Ignore errors when trying to clear a match that no longer exists.

If the match no longer exists, there is no point need to delete it.

I got this problem on the BufLeave event, when I used another plugin(dbext) while in XML file. I assume the problem is deeper(the other plugin does something with the matches list or something), but ignoring the error is a simple solution that works.