vitrue/redis-session-store — pull request #1 by felideon (2012-03-22 05:31:22+00:00)
Title: Implement #destroy_session to be compatible with AbstractStore interface

modified from https://github.com/stipple/redis-session-store/commit/f0432b9f1bbb0089de8d397b414046bd274751a9

a runtime error would occur if something caused a session reset,
as you can see from this gist: https://gist.github.com/2156344