[3.12] Fix possible refleak in CodeType.replace() (GH-106243) (GH-106244)

Fix possible refleak in CodeType.replace() (GH-106243)

A reference to c_code was leaked if PySys_Audit() failed.
(cherry picked from commit 3c70d46)

Co-authored-by: Serhiy Storchaka <[email protected]>

Author: miss-islington

Objects/codeobject.c

@@ -2030,6 +2030,7 @@ code_replace_impl(PyCodeObject *self, int co_argcount,
                     co_code, co_filename, co_name, co_argcount,
                     co_posonlyargcount, co_kwonlyargcount, co_nlocals,
                     co_stacksize, co_flags) < 0) {
+        Py_XDECREF(code);
         return NULL;
     }