Sesos (non-competing), 3 bytes
Hexdump of generated binary file:
0000000: 16f8ce ...
Size : 3 byte(s)
Assembler:
set numin
set numout
get
jmp
sub 1
fwd 1
add 1
put
rwd 1
;implicit jnz
Brainfuck pseudocode: ,[->+.<]