Fix regression from r23575 -- wl_notificationtimestamp didn't get updated anymore...

Doing a WHERE on x=NULL doesn't work; need to do 'x IS NULL' here.
Perhaps we should make the DB functions smarter to handle that case to do what we'd expect it to do (as we do turning arrays into 'IN (...)') but this'll fix it for now.

diff --git a/includes/UserMailer.php b/includes/UserMailer.php
index 3529c15..eac8727 100644 (file)
--- a/includes/UserMailer.php
+++ b/includes/UserMailer.php
@@ -376,7 +376,7 @@ class EmailNotification {
                                ), array( /* WHERE */
                                        'wl_title' => $title->getDBkey(),
                                        'wl_namespace' => $title->getNamespace(),
-                                       'wl_notificationtimestamp' => NULL
+                                       'wl_notificationtimestamp IS NULL'
                                ), 'UserMailer::NotifyOnChange'
                        );
                        # FIXME what do we do on failure ?