Removing the ID3V1 tag could give a negative len variable

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2299 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 3 insertions, 1 deletions

diff --git a/firmware/mpeg.c b/firmware/mpeg.c
index 969652d259..75a8b56468 100644
--- a/firmware/mpeg.c
+++ b/firmware/mpeg.c
@@ -1229,8 +1229,10 @@ static void mpeg_thread(void)
                         /* Make sure that the write pointer is at a word
                            boundary when we reach the end of the file */
                         if (len < amount_to_read) {
-                            /* skip id3v1 tag */
+                            /* Skip id3v1 tag */
                             len -= id3tags[tag_read_idx]->id3.id3v1len;
+                            if(len < 0)
+                                len = 0;
                             len = (len + 1) & 0xfffffffe;
                         }