owin-middleware/OwinOAuthProviders — pull request #9 by tomasherceg (2014-04-22 17:39:27+00:00)
Title: NullReferenceException in OpenID handler when no attribute exchange items are provided

Some OpenID providers do not send any of the attribute exchange properties. In that case the OpenIDAuthenticationHandler throws a NullReferenceException in the SetIdentityInformations method because the emailValue variable is null.