mozilla/pdf.js — pull request #4804 by timvandermeij (2014-05-15 19:19:34+00:00)
Title: Replaces for-in loop by regular for loop in fonts.js to improve performance

Fixes #4580 (thanks to @fkaelberer and @p01 for the suggestion!).

Note that the cMap errors/warnings in the console are another issue described in #4800.