Bug#920231: bs1770gain: Segfault in av_packet_copy_props() on mp3

[Petter Reinholdtsen <pere@hungry.com>]

I tracked down a public copy of the problematic file I ran into.  It is
the MP3 available from
<URL: http://www.dailytechnewsshow.com/dtns-2749-daily-tech-normie-show/ >.
Running it without --xml produces this output:

% bs1770gain DTNormieS_01.mp3 
analyzing ...
  [1/1] "DTNormieS_01.mp3": Error decoding audio: frame_reader_run() - "ffsox_frame_reader.c" (278).
Error running engine: ffsox_engine_run() - "ffsox_engine.c" (37).
Error running engine: ffsox_sox_reader_read() - "ffsox_sox_reader.c" (118).
Error running SoX effects chain: ffsox_analyze() - "ffsox_analyze.c" (166).
Error gathering track statistics. (bs1770gain_tree.c:163:bs1770gain_tree_analyze)
%

-- 
Happy hacking
Petter Reinholdtsen