Fix GitGutter argument errors on save and toggle.

Just updated to master and it looks like a regression was introduced in d420a445363bef98dc50fd622c5c96b202abd605 when toggling and saving
![screen shot 2014-01-07 at 12 21 20 pm](https://f.cloud.github.com/assets/885841/1862945/ba83cafc-77d9-11e3-9c8a-3fcb3c9cdebe.png)
This commit fixes it