From d89ade7ebe03bdc27c5cb3e5f7f9a129ab8fab54 Mon Sep 17 00:00:00 2001
From: Michael Steenbeek <michael@deciso.com>
Date: Mon, 12 Nov 2018 11:44:21 +0100
Subject: [PATCH] Fix use of undefined constant where string was intended

function_exists() takes a string, but an undefined constant was passed. If a constant is undefined, PHP will convert it to a string, but this is very dirty behaviour.
---
 src/www/diag_logs_template.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/www/diag_logs_template.inc b/src/www/diag_logs_template.inc
index c813edbd8..5844b2769 100644
--- a/src/www/diag_logs_template.inc
+++ b/src/www/diag_logs_template.inc
@@ -52,7 +52,7 @@ if (!empty($_POST['clear'])) {
     } else {
         system_clear_log($logfile);
     }
-    if (function_exists(clear_hook)) {
+    if (function_exists('clear_hook')) {
         clear_hook();
     }
 }