From c2b72c7688547ebc42f825bc253cb1af2a94bf17 Mon Sep 17 00:00:00 2001
From: Thomas Casteleyn <thomas.casteleyn@super-visions.com>
Date: Wed, 8 Jul 2020 13:18:54 +0200
Subject: [PATCH] More memory efficient image pass through

---
 pages/graphviz.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pages/graphviz.php b/pages/graphviz.php
index ace9e1f9f..7a42a8ccb 100644
--- a/pages/graphviz.php
+++ b/pages/graphviz.php
@@ -143,14 +143,14 @@ if (file_exists($sDotExecutable))
 	else
 	{
 		header('Content-type: image/png');
-		echo file_get_contents($sImageFilePath);
+		readfile($sImageFilePath);
 	}
 	@unlink($sDotFilePath);
 }
 else
 {
 	header('Content-type: image/png');
-	echo file_get_contents($sImageFilePath);
+	readfile($sImageFilePath);
 }
 
 ?>