From a740301faca1785a8b8e639439ceaa9fcf2cec8d Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Tue, 8 Mar 2022 12:16:34 +0000
Subject: [PATCH] fix nullability of local var.

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

diff --git a/src/Avalonia.Controls/Window.cs b/src/Avalonia.Controls/Window.cs
index 505f3f7416..feacc3e63a 100644
--- a/src/Avalonia.Controls/Window.cs
+++ b/src/Avalonia.Controls/Window.cs
@@ -879,7 +879,7 @@ namespace Avalonia.Controls
 
             if (startupLocation == WindowStartupLocation.CenterScreen)
             {
-                Screen screen = null;
+                Screen? screen = null;
 
                 if (owner is not null)
                 {