scoutapp/scout-plugins — pull request #94 by eric (2013-06-10 22:47:59+00:00)
Title: Deal with cases where the stats aren't available

Right now it throws an exception:

```
NoMethodError: undefined method `>=' for nil:NilClass
/usr/lib/ruby/gems/1.8/gems/scout-5.6.9/lib/scout/plugin.rb:183:in `counter'
Mapper Queue (Kestrel):24:in `build_report'
/usr/lib/ruby/gems/1.8/gems/scout-5.6.9/lib/scout/plugin.rb:220:in `run'
/usr/lib/ruby/gems/1.8/gems/scout-5.6.9/lib/scout/server.rb:398:in `process_plugin'
/usr/lib/ruby/1.8/timeout.rb:67:in `timeout'
```