fix event tests (QUnit struggles with objects that inherit from null)
fix event tests (QUnit struggles with objects that inherit from null)

dyx/ractive,thomsbg/ractive,cgvarela/ractive,marcalexiei/ractive,ndimas/ractive,pingjiang/ractive,JonDum/ractive,aliprogrammer69/ractive,ractivejs/ractive,marcalexiei/ractive,marcalexiei/ractive,JonDum/ractive,aliprogrammer69/ractive,p0lax/ractive,heavyk/ractive,squaredup/ractive,pingjiang/ractive,ISNIT0/ractive,heavyk/ractive,cgvarela/ractive,dyx/ractive,pingjiang/ractive,thomsbg/ractive,Rich-Harris/ractive,magicdawn/ractive,heavyk/ractive,ractivejs/ractive,squaredup/ractive,ndimas/ractive,magicdawn/ractive,aliprogrammer69/ractive,ISNIT0/ractive,p0lax/ractive,dyx/ractive,magicdawn/ractive,JonDum/ractive,squaredup/ractive,Rich-Harris/ractive,ractivejs/ractive,ndimas/ractive,ISNIT0/ractive,cgvarela/ractive,thomsbg/ractive,Rich-Harris/ractive