chpasswd: fixes and code shrink
update_passwd                                        732     734      +2
chpasswd_main                                        318     292     -26
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-26)             Total: -24 bytes
   text    data     bss     dec     hex filename
 781564    1168   11900  794632   c2008 busybox_old
 781548    1168   11900  794616   c1ff8 busybox_unstripped

5 files changed