[annotatescrollbar addon] Simplify visual-line finding
[annotatescrollbar addon] Simplify visual-line finding

Issue #6388

pabloferz/CodeMirror,wingify/CodeMirror,nightwing/CodeMirror,hackmdio/CodeMirror,nightwing/CodeMirror,wingify/CodeMirror,hackmdio/CodeMirror,wingify/CodeMirror,dperetti/CodeMirror,dperetti/CodeMirror,pabloferz/CodeMirror,nightwing/CodeMirror,dperetti/CodeMirror,pabloferz/CodeMirror,hackmdio/CodeMirror