Increase stamp on Map.set in Gee.TreeMap

diff --git a/gee/treemap.vala b/gee/treemap.vala
index 90ddeca..cbd156f 100644 (file)
--- a/gee/treemap.vala
+++ b/gee/treemap.vala
@@ -221,6 +221,7 @@ public class Gee.TreeMap<K,V> : Gee.AbstractMap<K,V> {
        public override void set (K key, V value) {
                set_to_node (ref root, key, value, null, null);
                root.color = Node.Color.BLACK;
+               stamp++;
        }
 
        private void move_red_left (ref Node<K, V> root) {