* lib/fileutils.rb: revert a line modified accidentally at r34669.

This fixes mingw test errors in TestDir_M17N.
  [ruby-core:42728] [Feature #4970]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34706 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Mon Feb 20 21:16:48 2012  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
+
+	* lib/fileutils.rb: revert a line modified accidentally at r34669.
+	  This fixes mingw test errors in TestDir_M17N.
+	  [ruby-core:42728] [Feature #4970]
+
 Mon Feb 20 21:09:27 2012  Tanaka Akira  <akr@fsij.org>
 
 	* ext/curses/curses.c (Init_curses): define Curses::VERSION.

lib/fileutils.rb

@@ -1342,7 +1342,7 @@ private
 
     def entries
       opts = {}
-      opts[:encoding] = "UTF-8" if /mswin|mignw/ =~ RUBY_PLATFORM
+      opts[:encoding] = ::Encoding::UTF_8 if fu_windows?
       Dir.entries(path(), opts)\
           .reject {|n| n == '.' or n == '..' }\
           .map {|n| Entry_.new(prefix(), join(rel(), n.untaint)) }