Add free functions for predefined llist types.
diff --git a/lib/lib.h b/lib/lib.h
index 715e78d..f8fcd8f 100644
--- a/lib/lib.h
+++ b/lib/lib.h
@@ -24,7 +24,9 @@
char *data;
};
-void llist_traverse(void *list, void (*using)(void *data));
+void llist_free_arg(void *node);
+void llist_free_double(void *node);
+void llist_traverse(void *list, void (*using)(void *node));
void *llist_pop(void *list); // actually void **list
void *dlist_pop(void *list); // actually struct double_list **list
void dlist_add_nomalloc(struct double_list **list, struct double_list *new);