Makes if/return statements uniform to codebase.
Makes if/return statements uniform to codebase.

dpvc/MathJax,GerHobbelt/MathJax,GerHobbelt/MathJax,thomasjm/MathJax,wikimedia/MathJax,thomasjm/MathJax,jinntrance/mathjax,thomasjm/MathJax,thomasjm/MathJax,jinntrance/mathjax,thomasjm/MathJax