Replace DL_EXPORT with PyMODINIT_FUNC
diff --git a/Doc/ext/noddy.c b/Doc/ext/noddy.c
index 933ee1b..23f26ef 100644
--- a/Doc/ext/noddy.c
+++ b/Doc/ext/noddy.c
@@ -54,7 +54,7 @@
     {NULL}  /* Sentinel */
 };
 
-DL_EXPORT(void)
+PyMODINIT_FUNC
 initnoddy(void) 
 {
     noddy_NoddyType.ob_type = &PyType_Type;