From 1c26721bb273f3fadd6215fbea19e38d4b74a972 Mon Sep 17 00:00:00 2001
From: Anton Firszov <antonfir@gmail.com>
Date: Mon, 15 Nov 2021 18:03:22 +0100
Subject: [PATCH] fix some sandbox code

---
 .../Memory/Allocators/Internals/UniformUnmanagedMemoryPool.cs   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ImageSharp/Memory/Allocators/Internals/UniformUnmanagedMemoryPool.cs b/src/ImageSharp/Memory/Allocators/Internals/UniformUnmanagedMemoryPool.cs
index d709937deb..40fbee4d72 100644
--- a/src/ImageSharp/Memory/Allocators/Internals/UniformUnmanagedMemoryPool.cs
+++ b/src/ImageSharp/Memory/Allocators/Internals/UniformUnmanagedMemoryPool.cs
@@ -114,7 +114,7 @@ namespace SixLabors.ImageSharp.Memory.Internals
                     result[i] = buffersLocal[this.index];
                     buffersLocal[this.index++] = null;
 
-                    if (result[i].IsInvalid)
+                    if (result[i]?.IsInvalid == true)
                     {
                         throw new InvalidOperationException("Renting disposed handle :O !!!");
                     }