Add AppVeyor build status badge.

[platform/upstream/libvorbis.git] / lib / vorbisfile.c

diff --git a/lib/vorbisfile.c b/lib/vorbisfile.c
index 93f663c..8a0a280 100644 (file)
--- a/lib/vorbisfile.c
+++ b/lib/vorbisfile.c
@@ -5,7 +5,7 @@
  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
  *                                                                  *
- * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2014             *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2015             *
  * by the Xiph.Org Foundation http://www.xiph.org/                  *
  *                                                                  *
  ********************************************************************
@@ -438,9 +438,11 @@ static ogg_int64_t _initial_pcmoffset(OggVorbis_File *vf, vorbis_info *vi){
     while((result=ogg_stream_packetout(&vf->os,&op))){
       if(result>0){ /* ignore holes */
         long thisblock=vorbis_packet_blocksize(vi,&op);
-        if(lastblock!=-1)
-          accumulated+=(lastblock+thisblock)>>2;
-        lastblock=thisblock;
+        if(thisblock>=0){
+          if(lastblock!=-1)
+            accumulated+=(lastblock+thisblock)>>2;
+          lastblock=thisblock;
+        }
       }
     }