Update changelog

prashantRaghu · prashantRaghu · commit 8b045f8b1d80 · 2023-08-18T16:43:58.000+05:30
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,7 +4,7 @@
 
 ### Added
 
--   Added support for resolving of remote URL refs in bundle method
+-   Added support for remote $ref resolution in bundle() API.
 
 ## [v4.15.0] - 2023-06-27
 
diff --git a/lib/dfs.js b/lib/dfs.js
@@ -51,7 +51,7 @@ class DFS {
       ) {
         traverseOrder.push(node);
         visited.add(node);
-        hrefsVisited.add(node.href);
+        node.href && hrefsVisited.add(node.href);
 
         let {
           graphAdj,
