Close repositories after use.

dulwich/tests/test_repository.py

@@ -271,6 +271,7 @@ class RepositoryRootTests(TestCase):
         tmp_dir = self.mkdtemp()
         self.addCleanup(shutil.rmtree, tmp_dir)
         t = Repo.init(tmp_dir)
+        self.addCleanup(t.close)
         r.fetch(t)
         self.assertIn(b'a90fa2d900a17e99b433217e988c4eb4a2e9a097', t)
         self.assertIn(b'a90fa2d900a17e99b433217e988c4eb4a2e9a097', t)
@@ -285,6 +286,7 @@ class RepositoryRootTests(TestCase):
         tmp_dir = self.mkdtemp()
         self.addCleanup(shutil.rmtree, tmp_dir)
         t = Repo.init(tmp_dir)
+        self.addCleanup(t.close)
         r.fetch(t)
         self.assertIn(b'a90fa2d900a17e99b433217e988c4eb4a2e9a097', t)
         self.assertIn(b'a90fa2d900a17e99b433217e988c4eb4a2e9a097', t)