handle case where open/save dialog is cancelled (#224)
handle case where open/save dialog is cancelled (#224)


extr0py/oni,JakubJecminek/oni,JakubJecminek/oni,extr0py/oni,extr0py/oni,JakubJecminek/oni,extr0py/oni,extr0py/oni,JakubJecminek/oni,JakubJecminek/oni