From 07446bbea1975449a73a5bcc907307255fccfe71 Mon Sep 17 00:00:00 2001
From: Lucas CHOLLET <lucas.chollet@free.fr>
Date: Tue, 21 May 2024 20:59:42 -0400
Subject: [PATCH] LibGfx/GIF: Use the correct reference to seek before the
 trailer

This was working with files, but with pre-allocated buffers, the end
is not the same position as last written byte.
---
 Userland/Libraries/LibGfx/ImageFormats/GIFWriter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibGfx/ImageFormats/GIFWriter.cpp b/Userland/Libraries/LibGfx/ImageFormats/GIFWriter.cpp
index 71c5d2d91c2..a50e04669da 100644
--- a/Userland/Libraries/LibGfx/ImageFormats/GIFWriter.cpp
+++ b/Userland/Libraries/LibGfx/ImageFormats/GIFWriter.cpp
@@ -182,7 +182,7 @@ ErrorOr<void> GIFAnimationWriter::add_frame(Bitmap& bitmap, int duration_ms, Int
 
     // Let's get rid of the previously written trailer
     if (!m_is_first_frame)
-        TRY(m_stream.seek(-1, SeekMode::FromEndPosition));
+        TRY(m_stream.seek(-1, SeekMode::FromCurrentPosition));
 
     m_is_first_frame = false;