check whether the last child is the same node as the one we're removing comments from - fixes #2072, fixes #2068
check whether the last child is the same node as the one we're removing comments from - fixes #2072, fixes #2068

kellyselden/babel,jridgewell/babel,Skillupco/babel,kaicataldo/babel,chicoxyzzy/babel,babel/babel,Skillupco/babel,existentialism/babel,shuhei/babel,hulkish/babel,lightscript/babylon-lightscript,shuhei/babel,hzoo/babel,hulkish/babel,danez/babylon,kellyselden/babel,babel/babel,cbishopvelti/babylon,vadzim/babel,maurobringolf/babel,Skillupco/babel,guybedford/babel,samwgoldman/babel,hzoo/babel,vadzim/babel,hzoo/babel,jridgewell/babel,hzoo/babel,jridgewell/babel,babel/babylon,jridgewell/babel,maurobringolf/babel,shuhei/babel,PolymerLabs/babel,Skillupco/babel,kaicataldo/babel,kaicataldo/babel,wcjohnson/babylon-lightscript,PolymerLabs/babel,chicoxyzzy/babel,chicoxyzzy/babel,kellyselden/babel,claudiopro/babel,claudiopro/babel,chicoxyzzy/babel,samwgoldman/babel,hulkish/babel,hulkish/babel,babel/babel,PolymerLabs/babel,recipesjs/ingredients,kellyselden/babel,babel/babel,samwgoldman/babel,kaicataldo/babel,maurobringolf/babel,existentialism/babel,guybedford/babel,guybedford/babel,existentialism/babel,claudiopro/babel