Fix Symbol fonts without font file but with Encoding dictionary (issue 5238)
Merge pull request #5250 from Snuffleupagus/issue-5238

Fix Symbol fonts without font file but with Encoding dictionary (issue 5238)
Fix code style in extensions/firefox/content/PdfJs.jsm
Fix code style in extensions/firefox/content/PdfjsChromeUtils.jsm
Fix code style in extensions/firefox/content/PdfjsContentUtils.jsm
Fix code style in extensions/firefox/content/PdfJs-stub.jsm
Fix code style in extensions/firefox/content/PdfJsTelemetry.jsm
Fix code style in extensions/firefox/content/PdfJsTelemetry-addon.jsm
Fix code style in extensions/firefox/content/PdfStreamConverter.jsm
Update |node make lint| to also cover the Firefox specific *.jsm files