Attach (recommended) or Link to PDF file here:
[chinese.pdf](https://github.com/mozilla/pdf.js/files/6404389/download.1.pdf)

Configuration:
- Web browser and its version:90.0.4430.93
- Operating system and its version: mac 10.15.5
- PDF.js version: 2.9.146
- Is a browser extension:no

Steps to reproduce the problem:
1. The Chinese in the attachment cannot be rendered

Brower ✅
![image](https://user-images.githubusercontent.com/13477114/116678074-81782a00-a9db-11eb-8719-74f48fcebc2b.png)

PDF.js ❌ [https://mozilla.github.io/pdf.js/web/viewer.html](https://mozilla.github.io/pdf.js/web/viewer.html)
![image](https://user-images.githubusercontent.com/13477114/116678212-a371ac80-a9db-11eb-847f-dd1ad7752c13.png)


What is the expected behavior? (add screenshot)
**The Chinese character can be rendered**
What went wrong? (add screenshot)
**All of the Chinese character cannot be rendered**
Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

const start = (font.start ? font.start : 0) + nameTable.offset;
      font.pos = start;
      const names = [[], []];
      const length = nameTable.length,
        end = start + length;
      const format = font.getUint16();
      const FORMAT_0_HEADER_LENGTH = 6;
      if (format !== 0 || length < FORMAT_0_HEADER_LENGTH) {
        
        return names;
      }
      const numRecords = font.getUint16();
      const stringsStart = font.getUint16();
      const records = [];
      const NAME_RECORD_LENGTH = 12;
      let i, ii;
      for (i = 0; i < numRecords && font.pos + NAME_RECORD_LENGTH <= end; i++) {
        const r = {
          platform: font.getUint16(),
          encoding: font.getUint16(),
          language: font.getUint16(),
          name: font.getUint16(),
          length: font.getUint16(),
          offset: font.getUint16(),
        };