misc: avoid js error on synchronisation error between map and address (#65107)

wcs/qommon/static/js/qommon.geolocation.js

@@ -33,7 +33,7 @@ function init_sync_from_template_address() {
   $(widget_selector + ' select').on('change', function() {
     var data = $(this).select2('data');
     var widget_name = $(this).parents('div.widget').data('widget-name');
-    if (data) {
+    if (data && data.length) {
       var number_and_street = null;
       var address = undefined;
       if (typeof data[0].address == "object") {