constify

src/vdp_pesi.c

@@ -246,8 +246,8 @@ struct bytes_tree {
 	pthread_cond_t		cond;
 	struct node		*root;
 	struct node		*front;
-	struct worker		*front_owner;
-	struct worker		*unpend_owner;
+	const struct worker	*front_owner;
+	const struct worker	*unpend_owner;
 	int			npending;
 	int			retval;
 };