ffplay sometimes crashes with 8ch tta file

[ami_stuff]

sample from ticket #838

 http://www.cccp-project.net/beta/test_files/7.1_Fun/8_Channel_ID_TrueTypeAudio.tta

to reproduce:

please seek a few times with the mouse in the file and catch the moment when the audio freezes and audio packet plays in a loop then close ffplay and there should be a crash

C:\>ffmpeg -i C:\8_Channel_ID_TrueTypeAudio.tta
ffmpeg version N-37208-g01fcbdf Copyright (c) 2000-2012 the FFmpeg developers
  built on Jan 27 2012 18:34:52 with gcc 4.6.2
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libope
ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --en
able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger -
-enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwben
c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-
libxvid --enable-zlib
  libavutil      51. 34.101 / 51. 34.101
  libavcodec     53. 60.100 / 53. 60.100
  libavformat    53. 31.100 / 53. 31.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 60.100 /  2. 60.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  6.100 /  0.  6.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, tta, from 'C:\8_Channel_ID_TrueTypeAudio.tta':
  Duration: 00:00:08.04, start: 0.000000, bitrate: 1584 kb/s
    Stream #0:0: Audio: tta, 48000 Hz, 7.1(wide), s32
At least one output file must be specified

[richardpl]

Fixed with 6ab681a4c1ffc0d5c36ebf13a10e0ecc61c81429.