stylistic nits

Fidget-Spinner · Jun 17, 2022 · May 19, 2022 · May 19, 2022 · May 19, 2022 · May 20, 2022
commit 43c66d62749b43eb4e1f173959fee1cd75fbd622
diff --git a/Lib/test/test_memoryview.py b/Lib/test/test_memoryview.py
@@ -549,10 +549,11 @@ def test_memoryview_bad_index_uaf(self):
         # memoryview Use After Free (memory_ass_sub) see gh-92888
         uaf_backing = bytearray(bytearray.__basicsize__)
         uaf_view = memoryview(uaf_backing).cast('n') # ssize_t format
-
+        memory_backing = None
+
         class weird_index:
             def __index__(self):
-                global memory_backing
+                nonlocal memory_backing
                 uaf_view.release() # release memoryview (UAF)
                 # free `uaf_backing` memory and allocate a new bytearray into it
                 memory_backing = uaf_backing.clear() or bytearray()