one more sanity check for role overrides

diff --git a/admin/roles/override.php b/admin/roles/override.php
index 298213bd87ed0e546e07b33225da0b08bd7e3f95..a5ebc4f7a4a3ee460b2a211bceafc3e657728683 100755 (executable)
--- a/admin/roles/override.php
+++ b/admin/roles/override.php
@@ -65,7 +65,7 @@
     }
 
 /// Process incoming role override
-    if ($data = data_submitted() and confirm_sesskey()) {
+    if ($data = data_submitted() and $roleid and confirm_sesskey()) {
         $allowed_values = array(CAP_INHERIT, CAP_ALLOW, CAP_PREVENT, CAP_PROHIBIT);
         $capabilities = fetch_context_capabilities($context); // capabilities applicable in this context