tests/compat: Use addCleanup rather than tearDown in a few more places.

dulwich/tests/compat/test_pack.py

@@ -43,12 +43,9 @@ class TestPack(PackTests):
 
     def setUp(self):
         require_git_version((1, 5, 0))
-        PackTests.setUp(self)
+        super(TestPack, self).setUp()
         self._tempdir = tempfile.mkdtemp()
-
-    def tearDown(self):
-        shutil.rmtree(self._tempdir)
-        PackTests.tearDown(self)
+        self.addCleanup(shutil.rmtree, self._tempdir)
 
     def test_copy(self):
         origpack = self.get_pack(pack1_sha)

dulwich/tests/compat/test_repository.py

@@ -45,12 +45,9 @@ class ObjectStoreTestCase(CompatTestCase):
     """Tests for git repository compatibility."""
 
     def setUp(self):
-        CompatTestCase.setUp(self)
+        super(ObjectStoreTestCase, self).setUp()
         self._repo = import_repo('server_new.export')
-
-    def tearDown(self):
-        CompatTestCase.tearDown(self)
-        tear_down_repo(self._repo)
+        self.addCleanup(tear_down_repo, self._repo)
 
     def _run_git(self, args):
         return run_git_or_fail(args, cwd=self._repo.path)