Ruby » Ruby master

• 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