timespec_newer(): time a should be > or >= to b

Time comparision should be >= not just >.  May seem a bit silly to
nitpick like this since we're comparing nano seconds, but on systems
with no high-res timers this happens more often than you would like.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/cond.c

@@ -34,7 +34,7 @@ static inline int timespec_newer(const struct timespec *a,
 	if (a->tv_sec != b->tv_sec)
 		return a->tv_sec > b->tv_sec;
 
-	return a->tv_nsec > b->tv_nsec;
+	return a->tv_nsec >= b->tv_nsec;
 }
 
 const char *condstr(enum cond_state s)