Cannot view report for rtl languages

[mattgarrish]

Running some more tests on the samples, I noticed that ace runs without error on RTL files, but when you open the output report, there is nothing in it. (Or I haven't seen this yet in LTR files, anyway.)

The following error is recorded in the console:

Uncaught TypeError: Cannot read property 'cfi' of undefined
    at ace-report-viewer.js:76
    at Array.forEach (<anonymous>)
    at ace-report-viewer.js:66
    at Array.forEach (<anonymous>)
    at AceReport.flattenData (ace-report-viewer.js:63)
    at new AceReport (ace-report-viewer.js:12)
    at HTMLDocument.<anonymous> (report.html:210)
    at j (jquery-3.2.1.min.js:2)
    at k (jquery-3.2.1.min.js:2)

For testing, try:
https://github.com/IDPF/epub3-samples/releases/download/20170606/kusamakura-japanese-vertical-writing.epub
https://github.com/IDPF/epub3-samples/releases/download/20170606/israelsailing.epub

[mattgarrish]

Just to confirm what the message says, when I look at the assertions there aren't any earl:pointer objects.