From 147b6bfe543a93415fc775340537ff28c4109690 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Mon, 28 May 2018 10:20:38 +0200
Subject: [PATCH] Convert brush to immutable brush.

Fixes #1613.
---
 src/Windows/Avalonia.Direct2D1/Media/FormattedTextImpl.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Windows/Avalonia.Direct2D1/Media/FormattedTextImpl.cs b/src/Windows/Avalonia.Direct2D1/Media/FormattedTextImpl.cs
index 0f09a1827b..c3fe60e790 100644
--- a/src/Windows/Avalonia.Direct2D1/Media/FormattedTextImpl.cs
+++ b/src/Windows/Avalonia.Direct2D1/Media/FormattedTextImpl.cs
@@ -101,7 +101,7 @@ namespace Avalonia.Direct2D1.Media
                 if (span.ForegroundBrush != null)
                 {
                     TextLayout.SetDrawingEffect(
-                        new BrushWrapper(span.ForegroundBrush),
+                        new BrushWrapper(span.ForegroundBrush.ToImmutable()),
                         new DWrite.TextRange(span.StartIndex, span.Length));
                 }
             }