Update uiSelectController.js

Author: melnikaite

src/uiSelectController.js

@@ -238,7 +238,7 @@ uis.controller('uiSelectCtrl',
       if (ctrl.isEmpty() || (angular.isArray(selectedItems) && !selectedItems.length) || !ctrl.removeSelected) {
         ctrl.setItemsFn(data);
       }else{
-        if ( data !== undefined ) {
+        if ( data !== undefined && data !== null ) {
           var filteredItems = data.filter(function(i) {
             return selectedItems.every(function(selectedItem) {
               return !angular.equals(i, selectedItem);