Fix possible undefined variable in case of error

nijel · nijel · commit 91c6a2ad081d · 2015-12-16T09:44:27.000+01:00
Signed-off-by: Michal Čihař &lt;michal@cihar.com&gt;
diff --git a/tbl_operations.php b/tbl_operations.php
@@ -243,7 +243,9 @@
         $_message = new PMA\libraries\Message;
         $_message->addMessages($warning_messages);
         $_message->isError(true);
-        if ($GLOBALS['ajax_request'] == true) {
+        if (isset($GLOBALS['ajax_request'])
+            && $GLOBALS['ajax_request'] == true
+        ) {
             $response = PMA\libraries\Response::getInstance();
             $response->setRequestStatus(false);
             $response->addJSON('message', $_message);
