FIX: issue #131 (Can assign null to byte variable)
FIX: issue #131 (Can assign null to byte variable)

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