mishoo/UglifyJS — pull request #513 by naomik (2014-02-20 02:54:15+00:00)
Title: Update process.js; remove duplicate key "return"

I noticed this while running a script in strict mode

```
.../uglify-js/lib/process.js:887
"return": found,
^^^^^^^^

SyntaxError: Duplicate data property in object literal not allowed in strict mode
```