Ticket #17837: 17837.patch

wp-includes/default-widgets.php

@@ -333 +333 @@
 
         function widget( $args, $instance ) {
                 extract($args);
-                $title = apply_filters('widget_title', empty($instance['title']) ? ' ' : $instance['title'], $instance, $this->id_base);
+                $title = apply_filters('widget_title', empty($instance['title']) ? '' : $instance['title'], $instance, $this->id_base);
                 echo $before_widget;
                 if ( $title )
                         echo $before_title . $title . $after_title;