fixing https://github.com/collectiveidea/acts_as_audited/issues/#issue/34
fixing https://github.com/collectiveidea/acts_as_audited/issues/#issue/34

can't use create() on relation after object has been destroyed.

xuwupeng2000/audited,reenhanced/audited,simplepractice/audited,ajoulie/audited,ConsultingMD/audited,Datacom/audited,klatunetworks/audited,cfiorini/audited,GhostGroup/audited,ktheory/acts_as_audited,happio/audited,ZHANGJIE982/audited,airbnb/audited,ishail/audited,ledermann/audited,ontrack/audited,lrgalego/audited,collectiveidea/audited,instacart/audited,azanar/audited