Failed to unlink before close on mswin

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63953 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/test_tempfile.rb

@@ -401,8 +401,8 @@ puts Tempfile.new('foo').path
     assert_equal expect, actual
   ensure
     if t
-      File.unlink(t.path)
       t.close
+      File.unlink(t.path)
     end
   end
 end