PDFs from lumileds.com do not load with PDF.js. Part of the background loads, then only the spinner continues while using 100% CPU. 

An example pdf is http://www.lumileds.com/uploads/17/DS61-pdf 

This behaviour occurs with both the release version of pdf.js in firefox 41.0.2 and the latest .xpi downloaded from this github page.

this.pendingEOFill = true;
    this.fillStroke();
  }
  closeFillStroke() {
    this.closePath();
    this.fillStroke();
  }
  closeEOFillStroke() {
    this.pendingEOFill = true;
    this.closePath();
    this.fillStroke();
  }
  endPath() {
    this.consumePath();
  }
  
  clip() {
    this.pendingClip = NORMAL_CLIP;
  }
  eoClip() {
    this.pendingClip = EO_CLIP;
  }
  
  beginText() {
    this.current.textMatrix = IDENTITY_MATRIX;
    this.current.textMatrixScale = 1;
    this.current.x = this.current.lineX = 0;
    this.current.y = this.current.lineY = 0;
  }
  endText() {