patched DateRangeFormatter to localized single date

sites/all/modules/contrib/fields/date_range_formatter/src/Plugin/Field/FieldFormatter/DateRangeFormatterRangeFormatter.php

@@ -63,7 +63,6 @@ class DateRangeFormatterRangeFormatter extends DateTimeCustomFormatter {
           if (date('d.m.Y', $start_date) === date('d.m.Y', $end_date)) {
             $format = $this->getSetting('one_day');
           }
-
           $date_str = format_date($start_date, 'custom', preg_replace('/\{([a-zA-Z])\}/', '{\\\$1}', t($format)));
           $matches = array();
           if (preg_match_all('/\{([a-zA-Z])\}/', $date_str, $matches)) {
@@ -75,7 +74,9 @@ class DateRangeFormatterRangeFormatter extends DateTimeCustomFormatter {
 
         }
         else {
-          $elements[$delta] = ['#markup' => date($this->getSetting('one_day'), $start_date)];
+          $format = $this->getSetting('one_day');
+          $date_str = format_date($start_date, 'custom', $format);
+          $elements[$delta] = ['#markup' => $date_str];
         }
       }
     }