Adding missing "static" declarations (found by "make smelly").
diff --git a/Modules/xxsubtype.c b/Modules/xxsubtype.c
index ae2b619..bbc5ea9 100644
--- a/Modules/xxsubtype.c
+++ b/Modules/xxsubtype.c
@@ -197,7 +197,7 @@
 	0,					/* tp_new */
 };
 
-PyObject *
+static PyObject *
 spam_bench(PyObject *self, PyObject *args)
 {
 	PyObject *obj, *name, *res;