From: Tristan Matthews <tmatth@videolan.org>
Date: Thu, 9 Nov 2017 07:30:14 +0000 (-0500)
Subject: vorbis: avoid invalid free
X-Git-Tag: v1.3.6~7
X-Git-Url: http://review.tizen.org/git/?p=platform%2Fupstream%2Flibvorbis.git;a=commitdiff_plain;h=10064bfdd51f7c59aa7724c206aae84b62def5e8

vorbis: avoid invalid free

Regression started at commit "4b67376 Remove multiple subtly different inline..."
---

diff --git a/lib/info.c b/lib/info.c
index 971f004..fe759ed 100644
--- a/lib/info.c
+++ b/lib/info.c
@@ -647,7 +647,7 @@ int vorbis_analysis_headerout(vorbis_dsp_state *v,
   memset(op_code,0,sizeof(*op_code));
 
   if(b){
-    oggpack_writeclear(&opb);
+    if(vi->channels>0)oggpack_writeclear(&opb);
     if(b->header)_ogg_free(b->header);
     if(b->header1)_ogg_free(b->header1);
     if(b->header2)_ogg_free(b->header2);