Use PyModule_AddObject() instead of accessing the module dict directly.

Modules/structmodule.c

@@ -1502,16 +1502,18 @@ static PyMethodDef struct_methods[] = {
 DL_EXPORT(void)
 initstruct(void)
 {
-	PyObject *m, *d;
+	PyObject *m;
 
 	/* Create the module and add the functions */
 	m = Py_InitModule4("struct", struct_methods, struct__doc__,
 			   (PyObject*)NULL, PYTHON_API_VERSION);
 
 	/* Add some symbolic constants to the module */
-	d = PyModule_GetDict(m);
+	if (StructError == NULL) {
 		StructError = PyErr_NewException("struct.error", NULL, NULL);
 		if (StructError == NULL)
 			return;
-	PyDict_SetItemString(d, "error", StructError);
+	}
+	Py_INCREF(StructError);
+	PyModule_AddObject(d, "error", StructError);
 }

Modules/termios.c

@@ -891,15 +891,17 @@ static struct constant {
 DL_EXPORT(void)
 PyInit_termios(void)
 {
-	PyObject *m, *d;
+	PyObject *m;
 	struct constant *constant = termios_constants;
 
 	m = Py_InitModule4("termios", termios_methods, termios__doc__,
                            (PyObject *)NULL, PYTHON_API_VERSION);
 
-	d = PyModule_GetDict(m);
+	if (TermiosError == NULL) {
 		TermiosError = PyErr_NewException("termios.error", NULL, NULL);
-	PyDict_SetItemString(d, "error", TermiosError);
+	}
+	Py_INCREF(TermiosError);
+	PyModule_AddObject(m, "error", TermiosError);
 
 	while (constant->name != NULL) {
 		PyModule_AddIntConstant(m, constant->name, constant->value);