ENOENT: no such file or directory, lstat

[njakob]

Since #8712 was introduced, opening a local file with spaces generates an error when PDFJS is executed in an Node environment (Electron in my case).

Configuration:

• Web browser and its version:
  Electron 1.7.5
• Operating system and its version:
  Fedora 25
• PDF.js version:
  1.9.562

Steps to reproduce the problem:

1. Open a locale file with spaces file:///home/njakob/Foo%20Bar/document.pdf

What went wrong?
The error ENOENT: no such file or directory, lstat is raised.

After digging into the code, when url.parse is used, the path is still encoded which certainly do not please fs calls.