**Link to PDF file (or attach file here):**
[tocheckFile.pdf](https://github.com/mozilla/pdf.js/files/240714/tocheckFile.pdf)

**Configuration:**
- Web browser and its version: FF45.0.2, Chrome Version 50.0.2661.86 (64-bit) 
- Operating system and its version: Mac OSX El Capitan

**\- PDF.js version:**
PDFJS.version = '1.1.215';
PDFJS.build = 'c9a7498';

**Steps to reproduce the problem:**
1. Use the lib to generate a PDF preview.

**What is the expected behavior? (add screenshot)**
PDF preview should have rendered completely. (frog head should be complete)

**What went wrong? (add screenshot)**
<img width="952" alt="imagesnotrenderinginpreview" src="https://cloud.githubusercontent.com/assets/10231850/14889265/cecb2d64-0d66-11e6-98e1-da2d39728552.png">

See attached screenshot in regards to the pdf file

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

constructor(maxSize = 0) {
    this._cache = new Map();
    this._maxSize = maxSize;
  }
  has(key) {
    return this._cache.has(key);
  }
  get(key) {
    if (this._cache.has(key)) {
      
      const value = this._cache.get(key);
      this._cache.delete(key);
      this._cache.set(key, value);
    }
    return this._cache.get(key);
  }
  set(key, value) {
    if (this._maxSize <= 0) {
      return;
    }
    if (this._cache.size + 1 > this._maxSize) {
      
      this._cache.delete(this._cache.keys().next().value);
    }
    this._cache.set(key, value);
  }
  clear() {