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.
Author: https://github.com/LucasChollet Commit: 07446bbea1 Pull-request: https://github.com/SerenityOS/serenity/pull/24412 Reviewed-by: https://github.com/nico ✅ Reviewed-by: https://github.com/trflynn89
2025-09-17 06:52:23 +00:00 · 2024-05-21 20:59:42 -04:00 · 2024-05-21 20:59:42 -04:00 · 07446bbea1 · 2024-07-17 06:54:15 +09:00
commit 07446bbea1
parent 3c4b8749f0
1 changed files with 1 additions and 1 deletions
--- 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;