Added missing semicolon
Added missing semicolon

This broke our porting-to-js build attempt :)
mobxjs/mobx,andykog/mobservable,mweststrate/MOBservable,andykog/mobservable,andykog/mobx,mobxjs/mobx,mobxjs/mobx,andykog/mobx,mobxjs/mobx,mweststrate/MOBservable,mweststrate/MOBservable