Index: src/wp-includes/revision.php
===================================================================
--- src/wp-includes/revision.php	(revision 30092)
+++ src/wp-includes/revision.php	(working copy)
@@ -118,10 +118,10 @@
 		 *
 		 * @since 3.6.0
 		 *
-		 * @param bool $check_for_changes Whether to check for changes before saving a new revision.
-		 *                                Default true.
-		 * @param int  $last_revision     ID of the last revision.
-		 * @param int  $post              Post ID.
+		 * @param bool    $check_for_changes Whether to check for changes before saving a new revision.
+		 *                                   Default true.
+		 * @param WP_Post $last_revision     The the last revision post object.
+		 * @param WP_Post $post              The post object.
 		 *
 		 */
 		if ( isset( $last_revision ) && apply_filters( 'wp_save_post_revision_check_for_changes', $check_for_changes = true, $last_revision, $post ) ) {