Fix regression from r44015 "Various minor cleanup/spacing"

Damaged some section editing, or at least display of undo, by causing null section parameters in section replacement to be treated as section 0.

diff --git a/includes/Article.php b/includes/Article.php
index 6a3ecae..b6ba6a3 100644 (file)
--- a/includes/Article.php
+++ b/includes/Article.php
@@ -1269,7 +1269,7 @@ class Article {
         */
        public function replaceSection( $section, $text, $summary = '', $edittime = NULL ) {
                wfProfileIn( __METHOD__ );
-               if( $section === '' ) {
+               if( $section == '' ) {
                        // Whole-page edit; let the whole text through
                } else {
                        if( is_null($edittime) ) {