#3 length flag not working correctly

[Anonymous]

l flag isn't working correctly, leading to memory corruptions and wrong results.
for instance:
hex2bin -s 10100 -l 200 test/segmented.hex
gave a wrong lowest address (1FF) and the result is only zeros.
same thing for :
hex2bin -s 100 -l 4 test/example.hex

attached patches (based on v1.0.12) correct this behaviour.
And bonus: the length doesn't need to be a power of 2 anymore.