Updates sourcemapin fixture

Fixes #162 

A source-map bugfix made available in [`0.1.33`](https://github.com/mozilla/source-map/commit/d42b3e6faca85804c4883c775fd82205d6f04ed7) seems to have led to a new mapping when using sourcemapin with Uglify JS2. This PR updates the fixture with the new map produced by Uglify JS2.