FIX: issue #102 (EITHER crashes on returning unset)
FIX: issue #102 (EITHER crashes on returning unset)

iArnold/red,rheber/red,red-eco/red,NikolayShubenkovProgSchool/red,rheber/red,iArnold/red,NikolayShubenkovProgSchool/red,red-eco/red,vehar/red,vehar/red