From f296d19832b080dd55419cafaef73cb23b20f56b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=B4me=20Chilliet?= <come.chilliet@nextcloud.com>
Date: Thu, 29 Aug 2024 10:06:20 +0200
Subject: [PATCH] fix(Image): Do not send empty Content-Type header
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Content-Transfer-Encoding: 8bit

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>
---
 lib/private/Image.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/private/Image.php b/lib/private/Image.php
index ca5058e6c65e5..396246125604f 100644
--- a/lib/private/Image.php
+++ b/lib/private/Image.php
@@ -166,7 +166,9 @@ public function show(?string $mimeType = null): bool {
 		if ($mimeType === null) {
 			$mimeType = $this->mimeType();
 		}
-		header('Content-Type: ' . ($mimeType ?? ''));
+		if ($mimeType !== null) {
+			header('Content-Type: ' . $mimeType);
+		}
 		return $this->_output(null, $mimeType);
 	}