Ticket #15442: 15442.diff

wp-includes/category-template.php

@@ -67 +67 @@
         $categories = get_the_terms( $id, 'category' );
         if ( ! $categories )
                 $categories = array();
+        
+        $categories = array_merge( array(), $categories );
 
         foreach ( array_keys( $categories ) as $key ) {
                 _make_cat_compat( $categories[$key] );