.manifest in io_splice-4.0.0 vs .manifest in io_splice-4.1.0

@@ -24,5 +24,6 @@
 setup.rb
 test/test_copy_stream.rb
 test/test_io_splice.rb
 test/test_io_splice_eintr.rb
 test/test_io_splice_in_full.rb
+test/test_rack_file_compat.rb