ocaml-gettext test fail with ocaml-fileutils 0.6.4

[RiderALT]

Indeed, testdata/test4.po and testdata/test4.po.bak ​​are exactly the same.

When i revert the FileUtilCMP.ml to Streams version (through revert the commit 05bda6b48c6b51f14fce42478c57efedea581b8a ) - the error disappears.

File "/usr/src/RPM/BUILD/ocaml-gettext-0.4.2/_build/default/test/oUnit-Test ocaml-gettext-localhost.localdomain#00.log", line 629, characters 1-1:
Error: Test ocaml-gettext:6:POT/PO file merge test:0:test4.pot+test4.po:0:Merging (in the log).

Raised at OUnitAssert.assert_failure in file "src/lib/ounit2/advanced/oUnitAssert.ml", line 45, characters 2-27
Called from OUnitRunner.run_one_test.(fun) in file "src/lib/ounit2/advanced/oUnitRunner.ml", line 83, characters 13-26

Unexpected error while processing testdata/test4.po ( OUnitTest.OUnit_failure("testdata/test4.po differs from testdata/test4.po.bak") )