[easytag/wip/vorbis-coverart] Mark Vorbis tags with deprecated images as changed

[David King <davidk src gnome org>]

commit 4f9508505542ec19f63a0f0ecf95283d7ce77b4b
Author: David King <amigadave amigadave com>
Date:   Mon Feb 24 18:05:49 2014 +0000

    Mark Vorbis tags with deprecated images as changed
    
    Ensure that old COVERART fields containing cover art in Vorbis tags are
    migrated to the new METADATA_BLOCK_PICTURE by marking the tag as
    modified, so that a save will be suggested (in the new format).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=689420

 src/ogg_tag.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/ogg_tag.c b/src/ogg_tag.c
index 5f48e34..53a6597 100644
--- a/src/ogg_tag.c
+++ b/src/ogg_tag.c
@@ -609,6 +609,10 @@ ogg_tag_read_file_tag (gchar *filename, File_Tag *FileTag, GError **error)
     {
         Picture *pic;
             
+        /* Force marking the file as modified, so that the deprecated cover art
+         * field in converted in a METADATA_PICTURE_BLOCK field. */
+        FileTag->saved = FALSE;
+
         pic = Picture_Allocate();
         if (!prev_pic)
             FileTag->picture = pic;