Require working threading for new test

Author: brandtbucher

Lib/test/test_frame.py

@@ -8,6 +8,7 @@
 import weakref
 
 from test import support
+from test.support import threading_helper
 from test.support.script_helper import assert_python_ok
 
 
@@ -327,6 +328,7 @@ def f():
                 gc.enable()
 
     @support.cpython_only
+    @threading_helper.requires_working_threading()
     def test_sneaky_frame_object_teardown(self):
 
         class SneakyDel: