Weakly retain popover controller in spec helper.
Weakly retain popover controller in spec helper.

gudatcomputers/PivotalCoreKit,pivotaltracker/PivotalCoreKit,idoru/PivotalCoreKit,joemasilotti/PivotalCoreKit,gudatcomputers/PivotalCoreKit,briancroom/PivotalCoreKit,jfuchs/PivotalCoreKit,pivotal/PivotalCoreKit,mjstallard/PivotalCoreKit,jfuchs/PivotalCoreKit,joemasilotti/PivotalCoreKit,idoru/PivotalCoreKit