Merge pull request #289 from sanfrancrisko/fix-nil-error-on-parameters

Fix rare undefined method `any?' for nil:NilClass error

Author: da-ar

lib/puppet-strings/yard/code_objects/type.rb

@@ -148,6 +148,7 @@ def add_check(check)
   end
 
   def parameters
+    @parameters ||= []  # guard against not filled parameters
     # just return params if there are no providers
     return @parameters if providers.empty?