jpeg2yuv.c:422: warning: long int format, int arg (arg 3)
jpeg2yuv.c:435: warning: long int format, int arg (arg 3)
jpeg2yuv.c:449: warning: long int format, int arg (arg 3)
errors. The routines where jpegsize is used are expecting 'int' so use 'int'
and '%d' instead of 'size_t' + "%ul".
