Prefer each instead of for on activesupport

activesupport/lib/active_support/buffered_logger.rb

@@ -77,7 +77,7 @@ def add(severity, message = nil, progname = nil, &block)
     # def info
     # def warn
     # def debug
-    for severity in Severity.constants
+    Severity.constants.each do |severity|
       class_eval <<-EOT, __FILE__, __LINE__ + 1
         def #{severity.downcase}(message = nil, progname = nil, &block) # def debug(message = nil, progname = nil, &block)
           add(#{severity}, message, progname, &block)                   #   add(DEBUG, message, progname, &block)