From f1d721d86920fb1502dd75de9df4fb717f4f1a57 Mon Sep 17 00:00:00 2001
From: James Newton-King <james@newtonking.com>
Date: Sat, 2 Sep 2017 17:38:25 +1200
Subject: [PATCH] -Asserted variable in WriteEscapedJavaScriptString is not
 null

---
 Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs b/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs
index 32cf9d84..66a81a86 100644
--- a/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs
+++ b/Src/Newtonsoft.Json/Utilities/JavaScriptUtils.cs
@@ -263,6 +263,8 @@ namespace Newtonsoft.Json.Utilities
                                 // copy it over when creating new buffer
                                 if (isEscapedUnicodeText)
                                 {
+                                    Debug.Assert(writeBuffer != null, "Write buffer should never be null because it is set when the escaped unicode text is encountered.");
+
                                     Array.Copy(writeBuffer, newBuffer, UnicodeTextLength);
                                 }