From a88c1473da0f05a409bb9c7160ff1a1800791702 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Mon, 18 Feb 2019 00:16:02 +0000
Subject: [PATCH] [OSX/Avalonia.Native] fix NRE in double dispose of ScreenImpl

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

diff --git a/src/Avalonia.Native/ScreenImpl.cs b/src/Avalonia.Native/ScreenImpl.cs
index c1edd6c846..0729de9b8e 100644
--- a/src/Avalonia.Native/ScreenImpl.cs
+++ b/src/Avalonia.Native/ScreenImpl.cs
@@ -41,7 +41,7 @@ namespace Avalonia.Native
 
         public void Dispose ()
         {
-            _native.Dispose();
+            _native?.Dispose();
             _native = null;
         }
     }