From 9ad49540d2911bca0afdace0fd7bf2be28661b16 Mon Sep 17 00:00:00 2001
From: Chris Cameron <chris.cameron@wedoresi.com>
Date: Fri, 10 May 2019 16:04:11 -0400
Subject: [PATCH] fix: Fixing JSON converter error when handling default
 existing value with struct types

---
 ICD.Common.Utils/Json/AbstractGenericJsonConverter.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ICD.Common.Utils/Json/AbstractGenericJsonConverter.cs b/ICD.Common.Utils/Json/AbstractGenericJsonConverter.cs
index fd51bab..f70a137 100644
--- a/ICD.Common.Utils/Json/AbstractGenericJsonConverter.cs
+++ b/ICD.Common.Utils/Json/AbstractGenericJsonConverter.cs
@@ -103,7 +103,10 @@ namespace ICD.Common.Utils.Json
 			if (serializer == null)
 				throw new ArgumentNullException("serializer");
 
-			return ReadJson(reader, (T)existingValue, serializer);
+			// Casting null blows up struct casts
+			T cast = (T)(existingValue ?? default(T));
+
+			return ReadJson(reader, cast, serializer);
 		}
 
 		/// <summary>