Test if parent is not null before testing classList

Closes #15152 (grafted from 45cf3086a1f63732e3298845a1fa183375ec76b4) --HG-- branch : 8.2
2026-10-06 13:12:24 +02:00
parent 60c5684c27
commit cb6804c1e1
1 changed files with 1 additions and 1 deletions
@@ -96,7 +96,7 @@
                }
                parent = parent.parentElement;
            }
-            if (!parent.classList.contains('modal')) {
+            if (parent && !parent.classList.contains('modal')) {
                ancestors.push(window);
            }
            return ancestors;