Selector: Update Sizzle from 2.3.5 to 2.3.6

Fixes gh-4782 Close gh-4846
jquery · Feb 17, 2021 · 1654874 · 1654874
1 parent f8bdb12
commit 1654874
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Showing 4 changed files with 8 additions and 8 deletions.
diff --git a/external/sizzle/dist/sizzle.js b/external/sizzle/dist/sizzle.js
@@ -1,12 +1,12 @@
 /*!
- * Sizzle CSS Selector Engine v2.3.5
+ * Sizzle CSS Selector Engine v2.3.6
  * https://sizzlejs.com/
  *
  * Copyright JS Foundation and other contributors
  * Released under the MIT license
  * https://js.foundation/
  *
- * Date: 2020-03-14
+ * Date: 2021-02-16
  */
 ( function( window ) {
 var i,
@@ -589,8 +589,8 @@ support = Sizzle.support = {};
  * @returns {Boolean} True iff elem is a non-HTML XML node
  */
 isXML = Sizzle.isXML = function( elem ) {
- var namespace = elem.namespaceURI,
- docElem = ( elem.ownerDocument || elem ).documentElement;
+ var namespace = elem && elem.namespaceURI,
+ docElem = elem && ( elem.ownerDocument || elem ).documentElement;
 
  // Support: IE <=8
  // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes