fix hardcoded quote in BacklinkCache

Also make the IS NULL in upper case, looks better and sql reservered
words often written in upper case

Change-Id: I844ec37bbf3fb00d95a43dfd6f58db1e67724d53

diff --git a/includes/cache/BacklinkCache.php b/includes/cache/BacklinkCache.php
index 0710caa..a4aa79e 100644 (file)
--- a/includes/cache/BacklinkCache.php
+++ b/includes/cache/BacklinkCache.php
@@ -268,8 +268,8 @@ class BacklinkCache {
                                        "{$prefix}_namespace" => $this->title->getNamespace(),
                                        "{$prefix}_title"     => $this->title->getDBkey(),
                                        $this->getDb()->makeList( array(
-                                               "{$prefix}_interwiki = ''",
-                                               "{$prefix}_interwiki is null",
+                                               "{$prefix}_interwiki" => '',
+                                               "{$prefix}_interwiki IS NULL",
                                        ), LIST_OR ),
                                        "page_id={$prefix}_from"
                                );