Update src/wp-includes/widgets/class-wp-widget-categories.php

Co-authored-by: Weston Ruter <[email protected]>

Author: joedolson

src/wp-includes/widgets/class-wp-widget-categories.php

@@ -119,7 +119,7 @@ function onCatChange(e) {
 		delete dropdown.dataset.lastkey;
 	});
 	dropdown.addEventListener( 'change', onCatChange );
-})();
+})( <?php echo wp_json_encode( $dropdown_id, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?> );
 </script>
 
 			<?php