[easytag/wip/gio: 2/4] Fix an invalid read when reading MP4 cover art

[David King <davidk src gnome org>]

commit b6c388ad25d323c3698ad6380d6c034a76f408f5
Author: David King <amigadave amigadave com>
Date:   Mon Oct 20 23:08:25 2014 +0100

    Fix an invalid read when reading MP4 cover art

 src/tags/mp4_tag.cc |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/tags/mp4_tag.cc b/src/tags/mp4_tag.cc
index d900713..ab7a5ce 100644
--- a/src/tags/mp4_tag.cc
+++ b/src/tags/mp4_tag.cc
@@ -221,7 +221,8 @@ mp4tag_read_file_tag (const gchar *filename,
     if (extra_items.contains ("covr"))
     {
         const TagLib::MP4::Item cover = extra_items["covr"];
-        const TagLib::MP4::CoverArt &art = cover.toCoverArtList ().front ();
+        const TagLib::MP4::CoverArtList covers = cover.toCoverArtList ();
+        const TagLib::MP4::CoverArt &art = covers.front ();
 
         FileTag->picture = Picture_Allocate ();