From e627821ed3655fe0d26ade448dfc852443fb47fc Mon Sep 17 00:00:00 2001
From: Yoh Deadfall <yoh.deadfall@hotmail.com>
Date: Sat, 24 Aug 2024 01:27:10 +0300
Subject: [PATCH] Reduced memory alloc for combined binding subjects (#16794)

---
 src/Avalonia.Base/Data/InstancedBinding.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Avalonia.Base/Data/InstancedBinding.cs b/src/Avalonia.Base/Data/InstancedBinding.cs
index 158f426cb6..f174be7f40 100644
--- a/src/Avalonia.Base/Data/InstancedBinding.cs
+++ b/src/Avalonia.Base/Data/InstancedBinding.cs
@@ -155,7 +155,7 @@ namespace Avalonia.Data
             _ = observable ?? throw new ArgumentNullException(nameof(observable));
             _ = observer ?? throw new ArgumentNullException(nameof(observer));
 
-            var subject = new CombinedSubject<object?>(observer, observable);
+            var subject = observable == observer ? observable : new CombinedSubject<object?>(observer, observable);
             return new InstancedBinding(subject, BindingMode.TwoWay, priority);
         }