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

Probably should be backported.
diff --git a/Modules/stropmodule.c b/Modules/stropmodule.c
index ed72a71..2917298 100644
--- a/Modules/stropmodule.c
+++ b/Modules/stropmodule.c
@@ -1210,6 +1210,8 @@
 	int c, n;
 	m = Py_InitModule4("strop", strop_methods, strop_module__doc__,
 			   (PyObject*)NULL, PYTHON_API_VERSION);
+	if (m == NULL)
+		return;
 
 	/* Create 'whitespace' object */
 	n = 0;