Fixed 2 failing tests w/ missing empty hash waiver data.

Doesn't prove that data is being passed through when we have it.

Signed-off-by: Ryan Davis <zenspider@chef.io>

lib/inspec/reporters/json.rb

@@ -95,7 +95,7 @@ module Inspec::Reporters
             line: c[:source_location][:line],
             ref:  c[:source_location][:ref],
           },
-          waiver_data: c[:waiver_data],
+          waiver_data: c[:waiver_data] || {},
           results: profile_results(c),
         }
       }