@snippet_files => nil

... when snippet files are empty. Radiant 1.1.3

```
You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.any?
Extracted source (around line #12):

9:           - thead.title_header do
10:             %th.name= t('snippet')
11:     %tbody
12:       - if @snippet_files.any?
13:         - @snippet_files.each do |snippet|
14:           %tr[snippet]
15:             - render_region :tbody, :locals => {:snippet => snippet} do |tbody|
```