Fix: selected selector modifier should activate only when `selected…

…` is given as a boolean value. Anything else (e.g. null) should be ignored.

js/dataTables.select.js

@@ -1,12 +1,12 @@
-/*! Select for DataTables 1.2.4
+/*! Select for DataTables 1.2.5-dev
  * 2015-2017 SpryMedia Ltd - datatables.net/license/mit
  */
 
 /**
  * @summary     Select for DataTables
  * @description A collection of API methods, events and buttons for DataTables
  *   that provides selection options of the items in a DataTable
- * @version     1.2.4
+ * @version     1.2.5-dev
  * @file        dataTables.select.js
  * @author      SpryMedia Ltd (www.sprymedia.co.uk)
  * @contact     datatables.net/forums
@@ -54,7 +54,7 @@ var DataTable = $.fn.dataTable;
 // Version information for debugger
 DataTable.select = {};
 
-DataTable.select.version = '1.2.4';
+DataTable.select.version = '1.2.5-dev';
 
 DataTable.select.init = function ( dt ) {
 	var ctx = dt.settings()[0];
@@ -730,7 +730,7 @@ $.each( [
 		var data;
 		var out = [];
 
-		if ( selected === undefined ) {
+		if ( selected !== true && selected !== false ) {
 			return indexes;
 		}