intridea/omniauth — pull request #513 by mkdynamic (2011-10-20 07:13:17+00:00)
Title: Stop rescuing all OAuth2::Errors and re-raising as RuntimeErrors

This pull request only removed it in 1 place, but there were several others so I think it makes sense to remove them all:
https://github.com/intridea/omniauth/pull/509

This will actually fix the issue (for realz) described in that pull request for Facebook.