Undo my previous change, apparently it is no good

middleman-core/lib/middleman-core/core_extensions/front_matter.rb

@@ -89,9 +89,7 @@ module Middleman::CoreExtensions
           content = content.sub(yaml_regex, "")
 
           begin
-            data = YAML.load($1)
-            return false unless data
-            data.symbolize_keys
+            data = YAML.load($1).symbolize_keys
           rescue *YAML_ERRORS => e
             logger.error "YAML Exception: #{e.message}"
             return false