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 

properties,
          SEAC_ANALYSIS_ENABLED
        );
        cff = parser.parse();
        cff.duplicateFirstGlyph();
        const compiler = new CFFCompiler(cff);
        tables["CFF "].data = compiler.compile();
      } catch (e) {
        warn("Failed to compile font " + properties.loadedName);
      }
    }
    
    if (!tables.name) {
      tables.name = {
        tag: "name",
        data: createNameTable(this.name),
      };
    } else {
      
      const namePrototype = readNameTable(tables.name);
      tables.name.data = createNameTable(name, namePrototype);
      this.psName = namePrototype[0][6] || null;
    }
    const builder = new OpenTypeFileBuilder(header.version);
    for (const tableTag in tables) {
      builder.addTable(tableTag, tables[tableTag].data);
    }
    return builder.toArray();
  }
  convert(fontName, font, properties) {