Fixed last second bugs.

src/builder/resources/speiger/assets/collections/templates/sets/AVLTreeSet.template

@@ -1098,6 +1098,7 @@ public class AVL_TREE_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERIC_TYPE
 			if(current == previous) index--;
 			updateNext();
 			updatePrevious();
+			if(current.needsSuccessor()) next = current;
 			removeNode(current);
 			current = null;
 		}