Ticket #15087: includes.patch

wp-includes/rewrite.php

@@ -337 +337 @@
 
                         // Do the query
                         $query = new WP_Query($query);
-                        if ( $query->is_single || $query->is_page )
+                        if ( is_object ( $query->post ) && ( $query->is_single || $query->is_page ) )
                                 return $query->post->ID;
                         else
                                 return 0;