* ext/syck/lib/syck/rubytypes.rb (Exception.yaml_new): fix bug

that causes YAML serialization problem for Exception.
  Exception#initialize doesn't use visible instance variable for
  the exception message, so call the method with the message.
  patched by Jingwen Owen Ou <jingweno AT gmail.com>.
  http://github.com/ruby/ruby/pull/41

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34908 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/syck/test_exception.rb

@@ -13,7 +13,7 @@ module Syck
     end
 
     def setup
-      @wups = Wups.new
+      @wups = Wups.new('test_message')
     end
 
     def test_to_yaml