From c43084804395535285a062d62b96631359b8c4b0 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@users.mediawiki.org>
Date: Sun, 2 Apr 2006 03:59:07 +0000
Subject: [PATCH] Live hack: Skip some work on empty category/link sets

---
 includes/OutputPage.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/includes/OutputPage.php b/includes/OutputPage.php
index b8ab62e09c..fa8c2fadb0 100644
--- a/includes/OutputPage.php
+++ b/includes/OutputPage.php
@@ -217,6 +217,9 @@ class OutputPage {
 	function addCategoryLinks($categories) {
 		global $wgUser, $wgContLang;
 
+		if ( !is_array( $categories ) ) {
+			return;
+		}
 		# Add the links to the link cache in a batch
 		$arr = array( NS_CATEGORY => $categories );
 		$lb = new LinkBatch;
@@ -901,6 +904,9 @@ class OutputPage {
 		$this->addKeyword( $wgTitle->getPrefixedText() );
 		$count = 1;
 		$links2d =& $parserOutput->getLinks();
+		if ( !is_array( $links2d ) ) {
+			return;
+		}
 		foreach ( $links2d as $ns => $dbkeys ) {
 			foreach( $dbkeys as $dbkey => $id ) {
 				$this->addKeyword( $dbkey );
-- 
2.20.1