Fix PHP notice when submitting 'design' admin panel on a browser that doesn't support...

diff --git a/actions/designadminpanel.php b/actions/designadminpanel.php
index 587333e06aa3f57cee24ce35400721d24345c011..199be43ead63968ef71c9521cd791f98a69a1502 100644 (file)
--- a/actions/designadminpanel.php
+++ b/actions/designadminpanel.php
@@ -258,8 +258,8 @@ class DesignadminpanelAction extends AdminPanelAction
     function saveBackgroundImage()
     {
         $filename = null;
-
-        if ($_FILES['design_background-image_file']['error'] ==
+        if (isset($_FILES['design_background-image_file']['error']) &&
+            $_FILES['design_background-image_file']['error'] ==
             UPLOAD_ERR_OK) {
 
             $filepath = null;