**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):

const width = img.width;
    const height = img.height;
    let widthScale = Math.max(
      Math.hypot(inverseTransform[0], inverseTransform[1]),
      1
    );
    let heightScale = Math.max(
      Math.hypot(inverseTransform[2], inverseTransform[3]),
      1
    );
    let paintWidth = width,
      paintHeight = height;
    let tmpCanvasId = "prescale1";
    let tmpCanvas, tmpCtx;
    while (
      (widthScale > 2 && paintWidth > 1) ||
      (heightScale > 2 && paintHeight > 1)
    ) {
      let newWidth = paintWidth,
        newHeight = paintHeight;
      if (widthScale > 2 && paintWidth > 1) {
        newWidth = Math.ceil(paintWidth / 2);
        widthScale /= paintWidth / newWidth;
      }
      if (heightScale > 2 && paintHeight > 1) {
        newHeight = Math.ceil(paintHeight / 2);
        heightScale /= paintHeight / newHeight;