Fix addressbook searching by gender (#5757)

CHANGELOG

@@ -8,6 +8,7 @@ CHANGELOG Roundcube Webmail
 - Fix bug where comment notation within style tag would cause the whole style to be ignored (#5747)
 - Fix bug where it wasn't possible to scroll folders list in Edge (#5750)
 - Fix folders list sorting on Windows - if php-intl is available (#5732)
+- Fix addressbook searching by gender (#5757)
 
 RELEASE 1.3-rc
 --------------

program/lib/Roundcube/rcube_addressbook.php

@@ -685,6 +685,11 @@ abstract class rcube_addressbook
                 && $value->format('Ymd') == $search->format('Ymd'));
         }
 
+        // Gender is a special value, must use strict comparison (#5757)
+        if ($colname == 'gender') {
+            $mode = self::SEARCH_STRICT;
+        }
+
         // composite field, e.g. address
         foreach ((array)$value as $val) {
             $val = mb_strtolower($val);