Attach (recommended) or Link to PDF file here:  [test.pdf](https://akmer.aikucun.com/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3_1616477914120_83.pdf)


Configuration:
- Web browser and its version: chrome 87.0.4280.88
- Operating system and its version: windows10
- PDF.js version: 2.6.347
- Is a browser extension:

Steps to reproduce the problem:
1. just open 

What is the expected behavior? (add screenshot)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/17724610/112087066-473f8f80-8bc8-11eb-8efb-56139ec42a9c.png)

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

while (codeSize < maxLen) {
      if ((b = str.getByte()) === -1) {
        
        
        break;
      }
      codeBuf |= b << codeSize;
      codeSize += 8;
    }
    var code = codes[codeBuf & ((1 << maxLen) - 1)];
    var codeLen = code >> 16;
    var codeVal = code & 0xffff;
    if (codeLen < 1 || codeSize < codeLen) {
      throw new FormatError("Bad encoding in flate stream");
    }
    this.codeBuf = codeBuf >> codeLen;
    this.codeSize = codeSize - codeLen;
    return codeVal;
  };
  FlateStream.prototype.generateHuffmanTable = function flateStreamGenerateHuffmanTable(
    lengths
  ) {
    var n = lengths.length;
    
    var maxLen = 0;
    var i;
    for (i = 0; i < n; ++i) {
      if (lengths[i] > maxLen) {
        maxLen = lengths[i];
      }