Fix clone in AnimatorSet

Change-Id: I277d801897b08889c53522affdfc5581953c4f01
diff --git a/core/java/android/animation/AnimatorSet.java b/core/java/android/animation/AnimatorSet.java
index 58e370c..5480193 100644
--- a/core/java/android/animation/AnimatorSet.java
+++ b/core/java/android/animation/AnimatorSet.java
@@ -1075,6 +1075,12 @@
                 if (mChildNodes != null) {
                     node.mChildNodes = new ArrayList<>(mChildNodes);
                 }
+                if (mSiblings != null) {
+                    node.mSiblings = new ArrayList<>(mSiblings);
+                }
+                if (mParents != null) {
+                    node.mParents = new ArrayList<>(mParents);
+                }
                 node.mEnded = false;
                 return node;
             } catch (CloneNotSupportedException e) {