From 22644028ca5c52843f87f45f42a2a44ed2eab7fe Mon Sep 17 00:00:00 2001
From: Giuseppe Lippolis <workgroupengineering@outlook.com>
Date: Tue, 19 Oct 2021 10:44:22 +0200
Subject: [PATCH] fixes: ValueStore Possible null reference argument for
 parameter

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

diff --git a/src/Avalonia.Base/ValueStore.cs b/src/Avalonia.Base/ValueStore.cs
index 495f13e1a9..151e5d1949 100644
--- a/src/Avalonia.Base/ValueStore.cs
+++ b/src/Avalonia.Base/ValueStore.cs
@@ -192,7 +192,7 @@ namespace Avalonia
                         _values.SetValue(property, sentinel);
                     }
 
-                    NotifyValueChanged<T>(property, old, default, BindingPriority.Unset);
+                    NotifyValueChanged<T>(property, old!, default!, BindingPriority.Unset);
                 }
             }
         }