further encrypt_des optimizations

function                                             old     new   delta
pw_encrypt                                           943     964     +21
des_crypt                                           1512    1509      -3
u_sbox                                               512     256    -256
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(add/remove: 0/0 grow/shrink: 1/2 up/down: 21/-259)          Total: -238 bytes

1 file changed