From 48a809e987a1331263d460d711e4f7955281892f Mon Sep 17 00:00:00 2001
From: Roman Kolesnikov <Rem.Kolomna@gmail.com>
Date: Fri, 9 Dec 2022 17:06:07 +0100
Subject: [PATCH] check Extensions object for null

using Microsoft.OpenApi.OData package it generates OpenApi document with OpenApiComponents.Extensions == null
---
 src/Microsoft.OpenApi/Services/OpenApiWalker.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Microsoft.OpenApi/Services/OpenApiWalker.cs b/src/Microsoft.OpenApi/Services/OpenApiWalker.cs
index 78ca5e61b..8c469261c 100644
--- a/src/Microsoft.OpenApi/Services/OpenApiWalker.cs
+++ b/src/Microsoft.OpenApi/Services/OpenApiWalker.cs
@@ -274,7 +274,7 @@ internal void Walk(IOpenApiExtensible openApiExtensible)
 
             _visitor.Visit(openApiExtensible);
 
-            if (openApiExtensible != null)
+            if (openApiExtensible.Extensions != null)
             {
                 foreach (var item in openApiExtensible.Extensions)
                 {