From 8464a480e003c38cf136f9a0ceffc5120e039bae Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Sat, 21 Jul 2018 17:49:50 -0500
Subject: [PATCH] Remove callback on animation completion.

---
 src/Avalonia.Animation/Animation.cs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.Animation/Animation.cs b/src/Avalonia.Animation/Animation.cs
index 67b937e8ba..98fb652c4a 100644
--- a/src/Avalonia.Animation/Animation.cs
+++ b/src/Avalonia.Animation/Animation.cs
@@ -169,12 +169,18 @@ namespace Avalonia.Animation
             if (this.RepeatCount == RepeatCount.Loop)
                 run.SetException(new InvalidOperationException("Looping animations must not use the Run method."));
 
-            this.Done += (sender, args) =>
+            EventHandler doneCallback = null;
+            doneCallback = (sender, args) =>
             {
                 if (sender == control)
+                {
                     run.SetResult(null);
+                    this.Done -= doneCallback;
+                }
             };
 
+            this.Done += doneCallback;
+
             this.Apply(control, Observable.Return(true));
 
             return run.Task;