[easytag] Simplify reading artwork description from Ogg tags

[David King <davidk src gnome org>]

commit 15eec372a8b0162dad18c36a7463aad135831bfe
Author: David King <amigadave amigadave com>
Date:   Thu Dec 18 17:43:32 2014 +0000

    Simplify reading artwork description from Ogg tags

 src/tags/ogg_tag.c |    9 ++-------
 1 files changed, 2 insertions(+), 7 deletions(-)
---
diff --git a/src/tags/ogg_tag.c b/src/tags/ogg_tag.c
index 99a103a..3a48834 100644
--- a/src/tags/ogg_tag.c
+++ b/src/tags/ogg_tag.c
@@ -559,14 +559,9 @@ et_add_file_tags_from_vorbis_comments (vorbis_comment *vc,
         desclen = read_guint32_from_byte (decoded_ustr, bytes_pos);
         bytes_pos += 4;
 
-        pic->description = g_malloc (desclen + 1);
+        pic->description = g_strndup ((const gchar *)&decoded_ustr[bytes_pos],
+                                      desclen);
 
-        for (i = 0; i < desclen; i++)
-        {
-            pic->description [i] = decoded_ustr [i + bytes_pos];
-        }
-
-        pic->description [desclen] = '\0';
         bytes_pos += desclen + 16;
 
         /* Reading picture size */