DevTools: Do not linkify to pseudo (program) node when there's no URL

third_party/WebKit/Source/devtools/front_end/components/DOMPresentationUtils.js

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
@@ skipping 218 matching lines @@
     var contentElement = shadowRoot.createChild("table", "stack-preview-container");
 
     /**
      * @param {!RuntimeAgent.StackTrace} stackTrace
      */
     function appendStackTrace(stackTrace)
     {
         for (var stackFrame of stackTrace.callFrames) {
             var row = createElement("tr");
             row.createChild("td", "function-name").textContent = WebInspector.beautifyFunctionName(stackFrame.functionName);
-            row.createChild("td").textContent = " @ ";
-            row.createChild("td").appendChild(linkifier.linkifyConsoleCallFrame(target, stackFrame));
+            var link = linkifier.linkifyConsoleCallFrame(target, stackFrame);
+            if (link) {
+                row.createChild("td").textContent = " @ ";
+                row.createChild("td").appendChild(link);
+            }
             contentElement.appendChild(row);
         }
     }
 
     if (!stackTrace)
         return element;
 
     appendStackTrace(stackTrace);
 
     var asyncStackTrace = stackTrace.parent;
@@ skipping 402 matching lines @@
     /**
      * @override
      * @param {!WebInspector.DOMNode} node
      * @return {?{title: string, color: string}}
      */
     decorate: function(node)
     {
         return { title: this._title, color: this._color };
     }
 }