From 67381d0a9166c189439a133d5da6d72ce5c56b9d Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Thu, 20 Aug 2020 15:14:31 +0100
Subject: [PATCH] dont crash when window is closed and apis are still called.

---
 src/Avalonia.Native/WindowImplBase.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Native/WindowImplBase.cs b/src/Avalonia.Native/WindowImplBase.cs
index 4b13666edd..08c5d51ea0 100644
--- a/src/Avalonia.Native/WindowImplBase.cs
+++ b/src/Avalonia.Native/WindowImplBase.cs
@@ -351,12 +351,12 @@ namespace Avalonia.Native
 
         public Point PointToClient(PixelPoint point)
         {
-            return _native.PointToClient(point.ToAvnPoint()).ToAvaloniaPoint();
+            return _native?.PointToClient(point.ToAvnPoint()).ToAvaloniaPoint() ?? default;
         }
 
         public PixelPoint PointToScreen(Point point)
         {
-            return _native.PointToScreen(point.ToAvnPoint()).ToAvaloniaPixelPoint();
+            return _native?.PointToScreen(point.ToAvnPoint()).ToAvaloniaPixelPoint() ?? default;
         }
 
         public void Hide()