API: Fix for r58551: WDDX formatter barfs on null

diff --git a/includes/api/ApiQueryAllUsers.php b/includes/api/ApiQueryAllUsers.php
index d54bba9..e2b1891 100644 (file)
--- a/includes/api/ApiQueryAllUsers.php
+++ b/includes/api/ApiQueryAllUsers.php
@@ -158,7 +158,8 @@ class ApiQueryAllUsers extends ApiQueryBase {
                                if ($fld_editcount)
                                        $lastUserData['editcount'] = intval($row->user_editcount);
                                if ($fld_registration)
-                                       $lastUserData['registration'] = wfTimestampOrNull(TS_ISO_8601, $row->user_registration);
+                                       $lastUserData['registration'] = $row->user_registration ?
+                                               wfTimestamp(TS_ISO_8601, $row->user_registration) : '';
 
                        }