whitelisted test_descr.py#test_type_lookup_mro_reference

Author: tomasstupka

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_descr.txt

@@ -100,6 +100,7 @@
 *graalpython.lib-python.3.test.test_descr.DictProxyTests.test_iter_keys
 *graalpython.lib-python.3.test.test_descr.DictProxyTests.test_iter_values
 *graalpython.lib-python.3.test.test_descr.DictProxyTests.test_repr
+*graalpython.lib-python.3.test.test_descr.MiscTests.test_type_lookup_mro_reference
 *graalpython.lib-python.3.test.test_descr.MroTest.test_incomplete_extend
 *graalpython.lib-python.3.test.test_descr.MroTest.test_incomplete_set_bases_on_self
 *graalpython.lib-python.3.test.test_descr.MroTest.test_incomplete_super