Fix smarty_function_markdown_to_text() to use $locale

app/inc/smarty.php

@@ -90,7 +90,7 @@ function smarty_modifier_html($html) {
  */
 function smarty_function_markdown_to_text($options, Smarty_Internal_Template $template)
 {
-    $locale = \o80\i18n\I18N::instance()->getLoadedLang();
+    global $locale;
     $text = strip_tags(Parsedown::instance()->text($options['markdown']));
     $number_letters = (new NumberFormatter($locale, NumberFormatter::ORDINAL))->format($options['id'] + 1);
     return $text !== '' ? $text : __f('Poll results', '%s option', $number_letters);