Index: src/wp-admin/edit.php
===================================================================
--- src/wp-admin/edit.php	(revision 43298)
+++ src/wp-admin/edit.php	(working copy)
@@ -172,9 +172,9 @@
 				$done = bulk_edit_posts( $_REQUEST );
 
 				if ( is_array( $done ) ) {
-					$done['updated'] = count( $done['updated'] );
-					$done['skipped'] = count( $done['skipped'] );
-					$done['locked']  = count( $done['locked'] );
+					$done['updated'] = is_countable( $done['updated'] ) ? count( $done['updated'] ) : 0;
+					$done['skipped'] = is_countable( $done['skipped'] ) ? count( $done['skipped'] ) : 0;
+					$done['locked']  = is_countable( $done['locked'] ) ? count( $done['locked'] ) : 0;
 					$sendback        = add_query_arg( $done, $sendback );
 				}
 			}