Fix test on Windows

Author: aisk

Lib/test/_test_multiprocessing.py

@@ -4376,7 +4376,8 @@ def test_shared_memory_recreate(self):
             self.addCleanup(shm2.unlink)
             self.assertEqual(shm2._name, names[1])
 
-    @unittest.skipUnless(hasattr(shared_memory, "rename"), "requires SharedMomery.rename")
+    @unittest.skipUnless(HAS_SHMEM and hasattr(shared_memory, "rename"),
+                         "requires SharedMomery.rename")
     def test_shared_memory_rename(self):
         name1 = self._new_shm_name('testrename01_tsmb')
         name2 = self._new_shm_name('testrename02_tsmb')