fix p2p switch FlushThrottle value (#2569)

CHANGELOG_PENDING.md

@@ -48,3 +48,4 @@ timeoutPrecommit before starting next round
 - [common/bit_array] Fixed a bug in the `Or` function
 - [common/bit_array] Fixed a bug in the `Sub` function (@bradyjoestar)
 - [common] \#2534 make bit array's PickRandom choose uniformly from true bits
+- [p2p] \#2555 fix p2p switch FlushThrottle value (@goolAdapter)

p2p/switch.go

@@ -103,7 +103,7 @@ func NewSwitch(
 	sw.rng = cmn.NewRand()
 
 	mConfig := conn.DefaultMConnConfig()
-	mConfig.FlushThrottle = time.Duration(cfg.FlushThrottleTimeout) * time.Millisecond
+	mConfig.FlushThrottle = cfg.FlushThrottleTimeout
 	mConfig.SendRate = cfg.SendRate
 	mConfig.RecvRate = cfg.RecvRate
 	mConfig.MaxPacketMsgPayloadSize = cfg.MaxPacketMsgPayloadSize