mozilla/kuma — pull request #2751 by groovecoder (2014-09-17 20:07:04+00:00)
Title: fix bug 1063830 - detect unmatched login in pre_social_login

My spot-check:
![mdn-signup-mismatch](https://cloud.githubusercontent.com/assets/71928/4310369/f9a227b8-3ea5-11e4-8bd5-acb98b95c379.gif)

But I'd like to do some extensive spot-checking on this because it prevents session-clearing which could possibly trap users into a session/sign-in limbo state. :cry: