FIX: added dead expressions elimination (except for logic expressions). Replaces previous fix for issue #223.
FIX: added dead expressions elimination (except for logic expressions). Replaces previous fix for issue #223.

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