bpo-44980: fix test_constructor to return None value (GH-27898) (GH-27914)

(cherry picked from commit 27b761a)

Co-authored-by: andrei kulakov <[email protected]>

Author: miss-islington

Lib/test/test_code.py

@@ -213,7 +213,7 @@ def func(): pass
         CodeType = type(co)
 
         # test code constructor
-        return CodeType(co.co_argcount,
+        CodeType(co.co_argcount,
                         co.co_posonlyargcount,
                         co.co_kwonlyargcount,
                         co.co_nlocals,