never freed buffer fix

based upon a patch by (Kurosu <kurosu inforezo org>)


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@3829 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

ffmpeg.c

@@ -1969,6 +1969,7 @@ static int av_encode(AVFormatContext **output_files,
     
     ret = 0;
  fail1:
+    av_freep(&bit_buffer);
     av_free(file_table);
 
     if (ist_table) {