Per Raymond's comment at http://www.mediawiki.org/wiki/Special:Code/MediaWiki/49885...

diff --git a/includes/specials/SpecialCreatePage.php b/includes/specials/SpecialCreatePage.php
index ba0ce41..473129b 100644 (file)
--- a/includes/specials/SpecialCreatePage.php
+++ b/includes/specials/SpecialCreatePage.php
@@ -40,7 +40,7 @@ class SpecialCreatePage extends SpecialPage {
                // check for no title
                if ( $wgRequest->wasPosted() && $target === '' ) {
                        $this->error( wfMsg( 'createpage-entertitle' ) );
-               } elseif ( $target !== '' ) {
+               } elseif ( $target !== null ) {
                        if ( !$title instanceof Title ) {
                                // check for invalid title
                                $this->error( wfMsg( 'createpage-badtitle', $target ) );