fix handling of smart col in widescreen mode when col not included in list mode

program/steps/mail/func.inc

@@ -448,10 +448,7 @@ function rcmail_js_message_list($a_headers, $insert_top=false, $a_show_cols=null
     $thead = $head_replace ? rcmail_message_list_head($_SESSION['list_attrib'], $allcols) : NULL;
 
     // get name of smart From/To column in folder context
-    if (array_search('fromto', $a_show_cols) !== false) {
-        $smart_col = rcmail_message_list_smart_column_name();
-    }
-
+    $smart_col = rcmail_message_list_smart_column_name();
     $OUTPUT->command('set_message_coltypes', array_values($a_show_cols), $thead, $smart_col);
 
     if ($multifolder && $_SESSION['search_scope'] == 'all') {