[comment-fold addon] Fix bug that broke folding of comments at start of line
[comment-fold addon] Fix bug that broke folding of comments at start of line

Closes #4056

jayaprabhakar/CodeMirror,sourcelair/CodeMirror,Jisuanke/CodeMirror,namin/CodeMirror,MarcelGerber/CodeMirror,notepadqq/CodeMirror,codio/CodeMirror,hackmdio/CodeMirror,thomasjm/CodeMirror,SidPresse/CodeMirror,sourcelair/CodeMirror,rrandom/CodeMirror,nightwing/CodeMirror,hackmdio/CodeMirror,schanzer/CodeMirror,namin/CodeMirror,adobe/CodeMirror2,nightwing/CodeMirror,mtaran-google/CodeMirror,pabloferz/CodeMirror,nightwing/CodeMirror,alur/CodeMirror,dperetti/CodeMirror,mtaran-google/CodeMirror,mizchi/CodeMirror,mizchi/CodeMirror,SidPresse/CodeMirror,bfrohs/CodeMirror,kerabromsmu/CodeMirror,ficristo/CodeMirror,pabloferz/CodeMirror,codio/CodeMirror,INTELOGIE/CodeMirror,Dominator008/CodeMirror,MarcelGerber/CodeMirror,wingify/CodeMirror,INTELOGIE/CodeMirror,alur/CodeMirror,INTELOGIE/CodeMirror,TDaglis/CodeMirror,codio/CodeMirror,TDaglis/CodeMirror,MarcelGerber/CodeMirror,Dominator008/CodeMirror,wingify/CodeMirror,grzegorzmazur/CodeMirror,rrandom/CodeMirror,jkaplon/CodeMirror,mtaran-google/CodeMirror,Jisuanke/CodeMirror,adobe/CodeMirror2,jayaprabhakar/CodeMirror,schanzer/CodeMirror,jkaplon/CodeMirror,TDaglis/CodeMirror,crazy4chrissi/CodeMirror,schanzer/CodeMirror,bfrohs/CodeMirror,alur/CodeMirror,rrandom/CodeMirror,ejgallego/CodeMirror,sourcelair/CodeMirror,dperetti/CodeMirror,ejgallego/CodeMirror,jkaplon/CodeMirror,SidPresse/CodeMirror,ejgallego/CodeMirror,grzegorzmazur/CodeMirror,ficristo/CodeMirror,thomasjm/CodeMirror,xeronith/CodeMirror,grzegorzmazur/CodeMirror,wingify/CodeMirror,notepadqq/CodeMirror,xeronith/CodeMirror,adobe/CodeMirror2,xeronith/CodeMirror,kerabromsmu/CodeMirror,notepadqq/CodeMirror,hackmdio/CodeMirror,jayaprabhakar/CodeMirror,dperetti/CodeMirror,namin/CodeMirror,thomasjm/CodeMirror,bfrohs/CodeMirror,crazy4chrissi/CodeMirror,crazy4chrissi/CodeMirror,mizchi/CodeMirror,kerabromsmu/CodeMirror,pabloferz/CodeMirror,ficristo/CodeMirror,Jisuanke/CodeMirror,Dominator008/CodeMirror