Fixed notice when restoring a numerical question with no units.

diff --git a/question/restorelib.php b/question/restorelib.php
index 3206a15b1a59bd37fc9bb1bbfeb4250fc9eecf03..33249ed1977abedfbb1f4dfa9ff2a5a9d041ea04 100644 (file)
--- a/question/restorelib.php
+++ b/question/restorelib.php
@@ -421,7 +421,11 @@
         $status = true;
 
         //Get the numerical array
-        $numerical_units = $info['#']['NUMERICAL_UNITS']['0']['#']['NUMERICAL_UNIT'];
+        if (!empty($info['#']['NUMERICAL_UNITS'])) {
+            $numerical_units = $info['#']['NUMERICAL_UNITS']['0']['#']['NUMERICAL_UNIT'];
+        } else {
+            $numerical_units = array();
+        }
 
         //Iterate over numerical_units
         for($i = 0; $i < sizeof($numerical_units); $i++) {