removed Instant::now() from initialization

Author: Tipuch

quinn-proto/src/congestion/bbr3/mod.rs

@@ -519,14 +519,14 @@ impl Bbr3 {
             bw_latest: 0.0,
             inflight_latest: 0,
             max_bw_filter: MaxFilter::new(MAX_BW_FILTER_LEN as u64),
-            extra_acked_interval_start: Some(Instant::now()),
+            extra_acked_interval_start: None,
             extra_acked_delivered: 0,
             extra_acked_filter: MaxFilter::new(EXTRA_ACKED_FILTER_LEN as u64),
             full_bw_reached: false,
             full_bw_now: false,
             full_bw: 0.0,
             full_bw_count: 0,
-            min_rtt_stamp: Some(Instant::now()),
+            min_rtt_stamp: None,
             min_rtt_filter_len: MIN_RTT_FILTER_LEN,
             probe_rtt_cwnd_gain,
             probe_rtt_duration: Duration::from_millis(PROBE_RTT_DURATION_MS),