rand/noise.c (noise_timer): Actually update previous time.

A long-standing bug.  Oops.

diff --git a/rand/noise.c b/rand/noise.c
index 00f036a..7eb4c71 100644 (file)
--- a/rand/noise.c
+++ b/rand/noise.c
@@ -113,6 +113,7 @@ static int timer(rand_pool *r, struct timeval *tv)
   x = tv->tv_usec + MILLION * tv->tv_sec;
   d = x ^ noise_last;
   dd = d ^ noise_diff;
+  noise_last = x;
   noise_diff = d;
   de = bitcount(d);
   dde = bitcount(dd);