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

Probably should be backported.
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 176f024..4c03602 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -2481,6 +2481,8 @@
 
 	/* Create the module and add the functions */
 	m = Py_InitModule("_curses", PyCurses_methods);
+	if (m == NULL)
+    		return;
 
 	/* Add some symbolic constants to the module */
 	d = PyModule_GetDict(m);