iff deep decodes incorrectly on bigendian

[ami_stuff]

attached sample decodes here incorrectly on bigendian

 http://www.datafilehost.com/download-b2a158d0.html

ffplay 1024.deep
ffplay version 1.1.git-05340be Copyright (c) 2003-2013 the FFmpeg developers
  built on Jan 22 2013 04:21:12 with gcc 4.5.0 (GCC)
  libavutil      52. 15.100 / 52. 15.100
  libavcodec     54. 90.100 / 54. 90.100
  libavformat    54. 61.102 / 54. 61.102
  libavdevice    54.  3.102 / 54.  3.102
  libavfilter     3. 33.100 /  3. 33.100
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
[iff @ 0x11561400] Estimating duration from bitrate, this may be inaccurate
Input #0, iff, from '1024.deep':
  Metadata:
    comment         : $VER:TVPaint opens doors to your imagination. 
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: iff_ilbm (DEEP / 0x50454544), argb, 1024x768, SAR 16:16 DAR 4:3, 90k tbr, 90k tbn, 90k tbc
Frame changed from size:0x0 to size:1024x768aq=    0KB vq=    0KB sq=    0B f=0/0   
29223372036854771712.00 A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   

[cehoyos]

Fixed by you.