fix test/rexml/test_encoding.rb failure

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33215 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Sep  8 02:59:00 2011  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
+
+	* test/rexml/test_encoding.rb:
+	  Add require 'require 'rexml/document'
+
 Wed Sep  8 02:53:00 2011  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
 
 	* lib/rexml/parsers/baseparser.rb, test/rexml/test_comment.rb:

test/rexml/test_encoding.rb

@@ -3,6 +3,7 @@
 require "rexml_test_utils"
 
 require 'rexml/source'
+require 'rexml/document'
 
 class EncodingTester < Test::Unit::TestCase
   include REXMLTestUtils