Ticket #16746: 16746.patch

wp-includes/query.php

@@ -3502 +3502 @@
         if ( is_single() || is_page() || is_feed() )
                 $more = 1;
         $content = $post->post_content;
-        if ( strpos( $content, '<!--nextpage-->' ) ) {
+        if ( false !== strpos( $content, '<!--nextpage-->' ) ) {
                 if ( $page > 1 )
                         $more = 1;
                 $multipage = 1;