[livescript mode] Fix bug with use of last token
[livescript mode] Fix bug with use of last token

Closes #4140

pabloferz/CodeMirror,sourcelair/CodeMirror,namin/CodeMirror,kerabromsmu/CodeMirror,sourcelair/CodeMirror,rrandom/CodeMirror,codio/CodeMirror,dperetti/CodeMirror,wingify/CodeMirror,schanzer/CodeMirror,mtaran-google/CodeMirror,codio/CodeMirror,SidPresse/CodeMirror,rrandom/CodeMirror,nightwing/CodeMirror,ejgallego/CodeMirror,TDaglis/CodeMirror,wingify/CodeMirror,jayaprabhakar/CodeMirror,jkaplon/CodeMirror,nightwing/CodeMirror,xeronith/CodeMirror,hackmdio/CodeMirror,alur/CodeMirror,sourcelair/CodeMirror,INTELOGIE/CodeMirror,xeronith/CodeMirror,wingify/CodeMirror,SidPresse/CodeMirror,ficristo/CodeMirror,crazy4chrissi/CodeMirror,TDaglis/CodeMirror,INTELOGIE/CodeMirror,rrandom/CodeMirror,mtaran-google/CodeMirror,jkaplon/CodeMirror,hackmdio/CodeMirror,dperetti/CodeMirror,notepadqq/CodeMirror,schanzer/CodeMirror,pabloferz/CodeMirror,crazy4chrissi/CodeMirror,grzegorzmazur/CodeMirror,hackmdio/CodeMirror,alur/CodeMirror,adobe/CodeMirror2,TDaglis/CodeMirror,SidPresse/CodeMirror,ficristo/CodeMirror,xeronith/CodeMirror,MarcelGerber/CodeMirror,ejgallego/CodeMirror,jayaprabhakar/CodeMirror,INTELOGIE/CodeMirror,mtaran-google/CodeMirror,grzegorzmazur/CodeMirror,namin/CodeMirror,nightwing/CodeMirror,thomasjm/CodeMirror,adobe/CodeMirror2,MarcelGerber/CodeMirror,notepadqq/CodeMirror,kerabromsmu/CodeMirror,codio/CodeMirror,alur/CodeMirror,ficristo/CodeMirror,MarcelGerber/CodeMirror,jkaplon/CodeMirror,pabloferz/CodeMirror,thomasjm/CodeMirror,crazy4chrissi/CodeMirror,ejgallego/CodeMirror,kerabromsmu/CodeMirror,thomasjm/CodeMirror,jayaprabhakar/CodeMirror,namin/CodeMirror,notepadqq/CodeMirror,dperetti/CodeMirror,grzegorzmazur/CodeMirror,adobe/CodeMirror2,schanzer/CodeMirror