Check return result from Py_InitModule*().  This API can fail.

Probably should be backported.
diff --git a/Modules/sunaudiodev.c b/Modules/sunaudiodev.c
index 3269c76..802184d 100644
--- a/Modules/sunaudiodev.c
+++ b/Modules/sunaudiodev.c
@@ -456,6 +456,8 @@
 	PyObject *m, *d;
 
 	m = Py_InitModule("sunaudiodev", sunaudiodev_methods);
+	if (m == NULL)
+		return;
 	d = PyModule_GetDict(m);
 	SunAudioError = PyErr_NewException("sunaudiodev.error", NULL, NULL);
 	if (SunAudioError)