Correctly pad bytes with zero in hex conversion

When reading a secret in ascii or base32 format from the user, we
perform a conversion of the potentially decoded string into hexadecimal
bytes, because that is what libnitrokey expects.
The format string we used in the conversion, however, did not account
for padding with a leading zero for single digit results. E.g., the
newline/line feed symbol '\n', which has a decimal value of 10 would
result in the string 'a' being produced, whereas '0a' would be the
correct result.
This change corrects the format string to fix this problem.

0 files changed, 0 insertions, 0 deletions