From 0dce4cfc6f3bea9d74e86b3a74e40a36cac3564a Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Tue, 30 Jul 2019 17:17:52 +0200
Subject: [PATCH] Set capacity seeing as we know it.

---
 src/Avalonia.Visuals/Rendering/SceneGraph/VisualNode.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Avalonia.Visuals/Rendering/SceneGraph/VisualNode.cs b/src/Avalonia.Visuals/Rendering/SceneGraph/VisualNode.cs
index c3dfe12b2d..f579bf0a62 100644
--- a/src/Avalonia.Visuals/Rendering/SceneGraph/VisualNode.cs
+++ b/src/Avalonia.Visuals/Rendering/SceneGraph/VisualNode.cs
@@ -184,7 +184,7 @@ namespace Avalonia.Rendering.SceneGraph
                 return;
             }
 
-            var keys = new List<long>();
+            var keys = new List<long>(Visual.VisualChildren.Count);
 
             for (var i = 0; i < Visual.VisualChildren.Count; ++i)
             {