code cleanup

Author: MaggieKimani1

src/Microsoft.OpenApi/Models/References/OpenApiSchemaReference.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
+// Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license.
 
 using Microsoft.OpenApi.Any;
@@ -23,7 +23,7 @@ private OpenApiSchema Target
         {
             get
             {
-                _target ??= Reference.HostDocument.ResolveReferenceTo<OpenApiSchema>(_reference);
+                _target ??= Reference.HostDocument?.ResolveReferenceTo<OpenApiSchema>(_reference);
                 OpenApiSchema resolved = new OpenApiSchema(_target);
                 if (!string.IsNullOrEmpty(_description)) resolved.Description = _description;
                 return resolved;

src/Microsoft.OpenApi/Reader/V2/OpenApiOperationDeserializer.cs

@@ -173,6 +173,9 @@ private static OpenApiRequestBody CreateFormBody(ParsingContext context, List<Op
                     _ => mediaType)
             };
 
+            foreach (var value in formBody.Content.Values.Where(static x => x.Schema is not null && x.Schema.Properties.Any() && string.IsNullOrEmpty((string)x.Schema.Type)))
+                value.Schema.Type = "object";
+
             return formBody;
         }
 

src/Microsoft.OpenApi/Services/OpenApiComponentsRegistryExtensions.cs

@@ -24,9 +24,7 @@ public static void RegisterComponents(this OpenApiWorkspace workspace, OpenApiDo
                 }
                 else
                 {
-                    location = version == OpenApiSpecVersion.OpenApi2_0
-                        ? document.BaseUri + "/" + OpenApiConstants.Definitions + "/" + item.Key
-                        : baseUri + ReferenceType.Schema.GetDisplayName() + "/" + item.Key;
+                    location = baseUri + ReferenceType.Schema.GetDisplayName() + "/" + item.Key;
                 }
 
                 workspace.RegisterComponent(location, item.Value);