Limit recursion when parsing URL in document-blocked page

Related issue:
- uBlockOrigin/uBlock-issues#1649

Co-authored-by: Raymond Hill <rhill@raymondhill.net>

src/js/document-blocked.js

@@ -203,7 +203,9 @@ uDom.nodeFromId('why').textContent = details.fs;
         return s;
     };
 
-    var renderParams = function(parentNode, rawURL) {
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/1649
+    //   Limit recursion.
+    var renderParams = function(parentNode, rawURL, depth = 0) {
         var a = document.createElement('a');
         a.href = rawURL;
         if ( a.search.length === 0 ) {
@@ -228,9 +230,9 @@ uDom.nodeFromId('why').textContent = details.fs;
             name = safeDecodeURIComponent(param.slice(0, pos));
             value = safeDecodeURIComponent(param.slice(pos + 1));
             li = liFromParam(name, value);
-            if ( reURL.test(value) ) {
+            if ( depth < 2 && reURL.test(value) ) {
                 ul = document.createElement('ul');
-                renderParams(ul, value);
+                renderParams(ul, value, depth + 1);
                 li.appendChild(ul);
             }
             parentNode.appendChild(li);