From: Patrick H. Lauke <redux@splintered.co.uk>
Date: Thu, 29 Dec 2022 12:50:43 +0000 (+0000)
Subject: Add guard rail to dropdown keyhandler
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cedd335da8cfa48314040b45f012faae62134b2e;p=thirdparty%2Fbootstrap.git

Add guard rail to dropdown keyhandler
---

diff --git a/js/src/dropdown.js b/js/src/dropdown.js
index 6b7c0cef30..1795de7c2a 100644
--- a/js/src/dropdown.js
+++ b/js/src/dropdown.js
@@ -416,6 +416,10 @@ class Dropdown extends BaseComponent {
         SelectorEngine.next(this, SELECTOR_DATA_TOGGLE)[0] ||
         SelectorEngine.findOne(SELECTOR_DATA_TOGGLE, event.delegateTarget.parentNode))
 
+    if (getToggleButton === null) {
+      return
+    }
+
     const instance = Dropdown.getOrCreateInstance(getToggleButton)
 
     if (isUpOrDownEvent) {