[libgee] Fix fix_up method in the TreeSet and TreeMap implementations

[Didier Villevalois <dvillevalois src gnome org>]

commit c6cf6f9c71cf543a06ef4ac5f6459cf886cc549e
Author: Maciej Piechotka <uzytkownik2 gmail com>
Date:   Sat Sep 19 22:59:33 2009 +0200

    Fix fix_up method in the TreeSet and TreeMap implementations
    
    Fixes bug 595703.

 gee/treemap.vala |    2 +-
 gee/treeset.vala |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gee/treemap.vala b/gee/treemap.vala
index 054bf65..660e81c 100644
--- a/gee/treemap.vala
+++ b/gee/treemap.vala
@@ -277,7 +277,7 @@ public class Gee.TreeMap<K,V> : Gee.AbstractMap<K,V> {
 		if (is_black (node.left) && is_red (node.right)) {
 			rotate_left (ref node);
 		}
-		if (is_red (node.left) && is_black (node.right)) {
+		if (is_red (node.left) && is_red (node.left.left)) {
 			rotate_right (ref node);
 		}
 	}
diff --git a/gee/treeset.vala b/gee/treeset.vala
index bddef09..c3aa9b9 100644
--- a/gee/treeset.vala
+++ b/gee/treeset.vala
@@ -108,7 +108,7 @@ public class Gee.TreeSet<G> : AbstractSet<G> {
 		if (is_black (node.left) && is_red (node.right)) {
 			rotate_left (ref node);
 		}
-		if (is_red (node.left) && is_black (node.right)) {
+		if (is_red (node.left) && is_red (node.left.left)) {
 			rotate_right (ref node);
 		}
 	}