Attach (recommended) or Link to PDF file here:
[双引号不正常.pdf](https://github.com/mozilla/pdf.js/files/3533108/default.pdf)


Configuration:
- Web browser and its version:  IE11 , chrome 
- Operating system and its version:  win7
- PDF.js version:  master
- Is a browser extension: nothing 
teps to reproduce the problem:
1. viewer.html web  online preview


What is the expected behavior? (add screenshot)
Displayed in normal characters.

What went wrong? (add screenshot)
![20190823143813](https://user-images.githubusercontent.com/6269307/63571860-062e6600-c5b4-11e9-9fff-75d65cf6bade.png)

Not only the two characters I took screenshots, but also a lot of garbled Chinese punctuation. For example, the Chinese 《》 symbol. But these garbled characters only appear in some specific very old pdf files.

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):nothing 

const angle = Math.floor(properties.italicAngle * 2 ** 16);
  return (
    "\x00\x03\x00\x00" + 
    string32(angle) + 
    "\x00\x00" + 
    "\x00\x00" + 
    string32(properties.fixedPitch ? 1 : 0) + 
    "\x00\x00\x00\x00" + 
    "\x00\x00\x00\x00" + 
    "\x00\x00\x00\x00" + 
    "\x00\x00\x00\x00"
  ); 
}
function createPostscriptName(name) {
  
  return name.replace(/[^\x21-\x7E]|[[\](){}<>/%]/g, "").slice(0, 63);
}
function createNameTable(name, proto) {
  if (!proto) {