Per discussion in bug 960063: https://bugzilla.mozilla.org/show_bug.cgi?id=960063#c8 https://bugzilla.mozilla.org/show_bug.cgi?id=960063#c9 Let's delete the session if it exists during cleanup.
Created attachment 8362722 [details] [diff] [review] 961874.patch Simple patch. Will run through try.
Try run: https://tbpl.mozilla.org/?tree=Try&rev=35f3f349e091 (seems to be some sort of weird thing going on with pushlog, so that link looks broken to me atm... if it still is later tonight, I will repush)
Ok, the above try push didn't have the right params, but I did another one that worked and shows that we're in good shape. https://tbpl.mozilla.org/?tree=Try&rev=395dda7e4b17