ntpd: use MSG_DONTWAIT; better readability

function                                             old     new   delta
gettime_fp                                             -      39     +39
ntpd_main                                           3214    3199     -15
gettime                                               47       -     -47
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(add/remove: 1/1 grow/shrink: 0/1 up/down: 39/-62)            Total: -23 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1 file changed