normal	2017-03-24 16:29:33 +0900 (Fri, 24 Mar 2017)

  New Revision: 58076

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58076

  Log:
    logger: remove redundant opt_str_freeze use
    
    Strings in "when" statements are allocation-free, so there's
    never any reason to uglify the code to use opt_str_freeze over
    the normal putobject instructions, here.

  Modified files:
    trunk/lib/logger.rb
Index: lib/logger.rb
===================================================================
--- lib/logger.rb	(revision 58075)
+++ lib/logger.rb	(revision 58076)
@@ -268,17 +268,17 @@ class Logger https://github.com/ruby/ruby/blob/trunk/lib/logger.rb#L268
       @level = severity
     else
       case severity.to_s.downcase
-      when 'debug'.freeze
+      when 'debug'
         @level = DEBUG
-      when 'info'.freeze
+      when 'info'
         @level = INFO
-      when 'warn'.freeze
+      when 'warn'
         @level = WARN
-      when 'error'.freeze
+      when 'error'
         @level = ERROR
-      when 'fatal'.freeze
+      when 'fatal'
         @level = FATAL
-      when 'unknown'.freeze
+      when 'unknown'
         @level = UNKNOWN
       else
         raise ArgumentError, "invalid log level: #{severity}"

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