Whoops, how did that get in there. :-) Revert all the parts of 51227 that were not supposed to go it. Only Modules/_ctypes/cfields.c was supposed to be changed

Python/pythonrun.c

@@ -60,7 +60,6 @@ static void call_sys_exitfunc(void);
 static void call_ll_exitfuncs(void);
 extern void _PyUnicode_Init(void);
 extern void _PyUnicode_Fini(void);
-extern void _PyEval_FiniThreads(void);
 
 #ifdef WITH_THREAD
 extern void _PyGILState_Init(PyInterpreterState *, PyThreadState *);
@@ -462,8 +461,6 @@ Py_Finalize(void)
 	_PyUnicode_Fini();
 #endif
 
-	_PyEval_FiniThreads();
-
 	/* XXX Still allocated:
 	   - various static ad-hoc pointers to interned strings
 	   - int and float free list blocks