From 0864f3c562f70f7d9900914d388714360e18819d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miha=20Marki=C4=8D?= <miha@rthand.com>
Date: Sat, 10 Jul 2021 14:24:32 +0200
Subject: [PATCH] Makes TextBox.UndoRedoState struct readonly

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

diff --git a/src/Avalonia.Controls/TextBox.cs b/src/Avalonia.Controls/TextBox.cs
index c1516613b3..ddf55808ce 100644
--- a/src/Avalonia.Controls/TextBox.cs
+++ b/src/Avalonia.Controls/TextBox.cs
@@ -145,7 +145,7 @@ namespace Avalonia.Controls
                 (o, v) => o.UndoLimit = v,
                 unsetValue: -1);
 
-        struct UndoRedoState : IEquatable<UndoRedoState>
+        readonly struct UndoRedoState : IEquatable<UndoRedoState>
         {
             public string Text { get; }
             public int CaretPosition { get; }