Declare the type descriptor and input buffer args of some functions as const.
diff --git a/skeletons/RELATIVE-OID.c b/skeletons/RELATIVE-OID.c
index 4275c0a..5f4ad4a 100644
--- a/skeletons/RELATIVE-OID.c
+++ b/skeletons/RELATIVE-OID.c
@@ -162,7 +162,7 @@
 }
 
 int
-RELATIVE_OID_get_arcs(RELATIVE_OID_t *roid,
+RELATIVE_OID_get_arcs(const RELATIVE_OID_t *roid,
 	void *arcs, unsigned int arc_type_size, unsigned int arc_slots) {
 	void *arcs_end = (char *)arcs + (arc_slots * arc_type_size);
 	int num_arcs = 0;