Changed an ifdef from IRIX_405 to CDsetcallback.
diff --git a/Modules/cdmodule.c b/Modules/cdmodule.c
index b1a85c0..c0bc3c7 100644
--- a/Modules/cdmodule.c
+++ b/Modules/cdmodule.c
@@ -738,7 +738,7 @@
 		return NULL;
 	}
 
-#ifdef IRIX_405
+#ifdef CDsetcallback
 	CDaddcallback(self->ob_cdparser, (CDDATATYPES) type, CD_callback, (void *) self);
 #else
 	CDsetcallback(self->ob_cdparser, (CDDATATYPES) type, CD_callback, (void *) self);