lib/fluent/plugin/out_mail.rb in fluent-plugin-mail-0.2.0 vs lib/fluent/plugin/out_mail.rb in fluent-plugin-mail-0.2.1

@@ -98,10 +98,10 @@
 
   # The old `key=value` format for old version compatibility
   def create_key_value_message(tag, time, record)
     values = []
 
-    values << @out_keys.each do |key|
+    values << @out_keys.map do |key|
       case key
       when @time_key
         format_time(time, @time_format)
       when @tag_key
         tag