From 0d4698c4d80975a3b190d9c71f412cb2bf856ece Mon Sep 17 00:00:00 2001
From: Nosolored <nosolored@gmail.com>
Date: Wed, 4 Apr 2018 11:50:34 +0200
Subject: [PATCH] Fix: black background in uploaded images

---
 main/inc/lib/image.lib.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/main/inc/lib/image.lib.php b/main/inc/lib/image.lib.php
index 74451f2a23..da13c880a0 100755
--- a/main/inc/lib/image.lib.php
+++ b/main/inc/lib/image.lib.php
@@ -519,6 +519,8 @@ class GDWrapper extends ImageWrapper
                 break;
             case 'png':
                 $src = @imagecreatefrompng($this->path);
+                @imagealphablending($dest, false);
+                @imagesavealpha($dest, true);
                 @imagecopy($dest, $src, 0, 0, $x, $y, $src_width, $src_height);
                 @imagepng($dest, $this->path);
                 break;