playlist: Fix out-of-bounds array access when the directory is blank

Change-Id: Ibf59f8191f1f26cf97c5d3ffcb5e3e4c7304bca0

1 files changed, 1 insertions, 1 deletions

diff --git a/apps/playlist.c b/apps/playlist.c
index 34a3ea53d2..2b94a13bca 100644
--- a/apps/playlist.c
+++ b/apps/playlist.c
@@ -524,7 +524,7 @@ static void update_playlist_filename(struct playlist_info* playlist,
     
     /* If the dir does not end in trailing slash, we use a separator.
        Otherwise we don't. */
-    if('/' != dir[dirlen-1])
+    if(!dirlen || '/' != dir[dirlen-1])
     {
         sep="/";
         dirlen++;