[BUG] Huge icon "open as root"

This icon is so big. It was reported back in snwh/moka-icon-theme#226 but the issue was closed and it's still not fixed. Running version v4.1.2 of Faba.

![screenshot from 2016-11-01 12-47-43](https://cloud.githubusercontent.com/assets/10391266/19888839/89cd450e-a031-11e6-852a-960290a08420.png)

The bug is also present in Moka and other icon themes that inherit from Faba or Moka.