mozilla/pdf.js — pull request #3770 by SunboX (2013-10-04 22:26:49+00:00)
Title: Trying to recycle some Arrays instead of creating new ones inside ...

... fonts.js and evaluator.js

This is the second of some array-reset optimizations. I split those in smaller parts, because I don't think all goes well. ;) So it's easier to review the code and apply those patches. (one by one)

See http://stackoverflow.com/a/1234337/1692735 for more details about this optimization.