commit c53c6bbd387ca582091a8bfca33140d65c200be0
Author: wm4 <wm4@nowhere>
Date:   Mon Mar 7 15:00:08 2016 +0100

    video: fix coverart decoding
    
    Deselecting cover art and then reselecting it did not work. The second
    time the cover art picture is not displayed again. (This seems to break
    every other month...)
    
    The reason is commit 6640b22a. It mutates the input packet. And it is
    correct that we don't own d_video->header->attached_picture at this
    point. Fix it by creating a new packet reference.

diff --git a/video/decode/dec_video.c b/video/decode/dec_video.c
index e8a5774..fc0b090 100644
--- a/video/decode/dec_video.c
+++ b/video/decode/dec_video.c
@@ -363,9 +363,10 @@ void video_work(struct dec_video *d_video)
         return;

     if (d_video->header->attached_picture) {
+        struct demux_packet *packet =
+            demux_copy_packet(d_video->header->attached_picture);
         if (d_video->current_state == DATA_AGAIN && !d_video->cover_art_mpi) {
-            d_video->cover_art_mpi =
-                decode_packet(d_video, d_video->header->attached_picture, 0);
+            d_video->cover_art_mpi = decode_packet(d_video, packet, 0);
             // Might need flush.
             if (!d_video->cover_art_mpi)
                 d_video->cover_art_mpi = decode_packet(d_video, NULL, 0);
@@ -375,6 +376,7 @@ void video_work(struct dec_video *d_video)
             d_video->current_mpi = mp_image_new_ref(d_video->cover_art_mpi);
         // (DATA_OK is returned the first time, when current_mpi is sill set)
         d_video->current_state = DATA_EOF;
+        talloc_free(packet);
         return;
     }