MDL-11356, set display of grade items to database default (-1)

diff --git a/lib/grade/grade_item.php b/lib/grade/grade_item.php
index ad8620328a6b976e68f93efb56fd7efca78cdf8f..3e5e19d25a4a4baf53b4b6bf588164ef10b46863 100644 (file)
--- a/lib/grade/grade_item.php
+++ b/lib/grade/grade_item.php
@@ -202,7 +202,7 @@ class grade_item extends grade_object {
      * Display type of the grades (Real, Percentage, Letter, or default).
      * @var int $display
      */
-    var $display = null;
+    var $display = -1;
 
     /**
      * 0 if visible, 1 always hidden or date not visible until