Attach (recommended) or Link to PDF file here:
[测试文件.pdf](https://github.com/mozilla/pdf.js/files/7147166/default.pdf)

Configuration:
- Web browser and its version:chrome 92.0.4515.131
- Operating system and its [version:](url) windows
- PDF.js version:v2.9.359
- Is a browser extension:no

Steps to reproduce the problem:
1. use pdf.js to open this pdf file
2. incomplete content display


What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/16495895/132935415-2b52322d-561c-4f60-97df-24e4429743ff.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/16495895/132935425-e5e6605b-71f5-4065-bb89-5c0fdbe1564b.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

let sign = 0;
    if (ch ===  0x2d) {
      sign = -1;
      ch = this.nextChar();
      if (ch ===  0x2d) {
        
        ch = this.nextChar();
      }
    } else if (ch ===  0x2b) {
      sign = 1;
      ch = this.nextChar();
    }
    if (ch ===  0x0a || ch ===  0x0d) {
      
      do {
        ch = this.nextChar();
      } while (ch === 0x0a || ch === 0x0d);
    }
    if (ch ===  0x2e) {
      divideBy = 10;
      ch = this.nextChar();
    }
    if (ch <  0x30 || ch >  0x39) {
      if (
        divideBy === 10 &&
        sign === 0 &&
        (isWhiteSpace(ch) || ch ===  -1)
      ) {
        
        warn("Lexer.getNumber - treating a single decimal point as zero.");