* error.c (syserr_initialize): set the encoding of Errno::*#message

as locale. [ruby-dev:42358]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29438 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_exception.rb

@@ -312,4 +312,8 @@ end.join
     e = assert_raise(NoMethodError) {str.__send__(id)}
     assert_equal("undefined method `#{id}' for #{str.inspect}:String", e.message, bug3237)
   end
+
+  def test_errno
+    assert_equal(Encoding.find("locale"), Errno::EINVAL.new.message.encoding)
+  end
 end