Ticket #5293: 5293.diff

wp-includes/formatting.php

@@ -323 +323 @@
         $title = strip_tags($title);
         $title = apply_filters('sanitize_title', $title);
 
-        if (empty($title)) {
+        if ( '' === $title || false === $title )
                 $title = $fallback_title;
-        }
 
         return $title;
 }

wp-includes/taxonomy.php

@@ -699 +699 @@
                         return 0;
                 $where = $wpdb->prepare( "t.term_id = %d", $term );
         } else {
-                if ( ! $term = sanitize_title($term) )
+                if ( '' === $term = sanitize_title($term) )
                         return 0;
                 $where = $wpdb->prepare( "t.slug = %s", $term );
         }