[completion demo] Fix check for undefined
[completion demo] Fix check for undefined

codio/CodeMirror,dperetti/CodeMirror,nightwing/CodeMirror,namin/CodeMirror,notepadqq/CodeMirror,grzegorzmazur/CodeMirror,notepadqq/CodeMirror,MarcelGerber/CodeMirror,ficristo/CodeMirror,dperetti/CodeMirror,SidPresse/CodeMirror,MarcelGerber/CodeMirror,wingify/CodeMirror,thomasjm/CodeMirror,pabloferz/CodeMirror,pabloferz/CodeMirror,jkaplon/CodeMirror,mtaran-google/CodeMirror,MarcelGerber/CodeMirror,hackmdio/CodeMirror,jayaprabhakar/CodeMirror,mtaran-google/CodeMirror,hackmdio/CodeMirror,jkaplon/CodeMirror,grzegorzmazur/CodeMirror,jkaplon/CodeMirror,jayaprabhakar/CodeMirror,dperetti/CodeMirror,SidPresse/CodeMirror,namin/CodeMirror,jayaprabhakar/CodeMirror,wingify/CodeMirror,ficristo/CodeMirror,ficristo/CodeMirror,pabloferz/CodeMirror,namin/CodeMirror,notepadqq/CodeMirror,SidPresse/CodeMirror,codio/CodeMirror,thomasjm/CodeMirror,nightwing/CodeMirror,grzegorzmazur/CodeMirror,codio/CodeMirror,thomasjm/CodeMirror,nightwing/CodeMirror,wingify/CodeMirror,hackmdio/CodeMirror,mtaran-google/CodeMirror