ISSUE #1228: Changes for review comments

Author: elize-vdr

src/Microsoft.OpenApi.Readers/V3/OpenApiV3VersionService.cs

@@ -131,12 +131,12 @@ public OpenApiReference ConvertToOpenApiReference(
                     }
                     else if (id.StartsWith("/paths/"))
                     {
-                        var localSegments = segments[1].Split('/');
-                        if (localSegments.Length == 3)
+                        var localSegments = segments[1].Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
+                        if (localSegments.Length == 2)
                         {
                             // The reference of a path may contain JSON escape character ~1 for the forward-slash character, replace this otherwise
                             // the reference cannot be resolved.
-                            id = localSegments[2].Replace("~1", "/");
+                            id = localSegments[1].Replace("~1", "/");
                         }
                         else
                         {

src/Microsoft.OpenApi/Services/OpenApiWalker.cs

@@ -447,14 +447,11 @@ internal void Walk(OpenApiPathItem pathItem)
 
             _visitor.Visit(pathItem);
 
-            if (pathItem != null)
+            // The path may be a reference
+            if (pathItem != null && !ProcessAsReference(pathItem))
             {
-                // The path may be a reference
-                if (!ProcessAsReference(pathItem))
-                {
-                    Walk(OpenApiConstants.Parameters, () => Walk(pathItem.Parameters));
-                    Walk(pathItem.Operations);
-                }
+                Walk(OpenApiConstants.Parameters, () => Walk(pathItem.Parameters));
+                Walk(pathItem.Operations);
             }
             _visitor.Visit(pathItem as IOpenApiExtensible);