From a01598c1f19e87ab69ee75dec209e8415a23a0e4 Mon Sep 17 00:00:00 2001
From: Carlos Rafael Giani <dv@pseudoterminal.org>
Date: Wed, 24 Oct 2012 23:40:20 +0200
Subject: [PATCH] opusdec: fixed buffer unmapping bug

When the decoder received a NULL buffer, it tried to
unmap a not mapped buffer.

https://bugzilla.gnome.org/show_bug.cgi?id=686829
---
 ext/opus/gstopusdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/opus/gstopusdec.c b/ext/opus/gstopusdec.c
index 66e4b5d858..12e1652f26 100644
--- a/ext/opus/gstopusdec.c
+++ b/ext/opus/gstopusdec.c
@@ -453,7 +453,7 @@ opus_dec_chain_parse_data (GstOpusDec * dec, GstBuffer * buffer)
     n = opus_multistream_decode (dec->state, data, size, out_data, samples, 0);
   }
   gst_buffer_unmap (outbuf, &omap);
-  if (buf)
+  if (data != NULL)
     gst_buffer_unmap (buf, &map);
 
   if (n < 0) {