Fix retrieving student number

components/signup.php

@@ -52,7 +52,7 @@ if (isset($_REQUEST['signupid']) && isset($_REQUEST['signuppw'])) {
             $smarty->assign("signuppw", $signuppw);
             // pass on the student id if it exists
             if (isset($_REQUEST['signupsid'])) {
-                $smarty->assign("signupsid", $signupsid);
+                $smarty->assign("signupsid", $_REQUEST['signupsid']);
             }
             $smarty->assign("overridable", $overridable);
             $smarty->assign("usertype", $row[type]);