concrete5/concrete5-5.7.0 — pull request #1736 by EC-Chris (2014-12-30 01:57:21+00:00)
Title: Allow theme to be set to false

I changed this if statement to check if theme is null. This allows for `$this->theme = false` to be used in an action to disable the theme for just that action instead of having to override `getTheme()` and disable it for the entire controller.