les: short circuit in the unregister if peer is not registered (#19644)

f2612ac9 · gary rong · Péter Szilágyi · 58497f46 · f2612ac9
Commit f2612ac9 authored May 31, 2019 by gary rong Committed by Péter Szilágyi May 31, 2019
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freeclient.go les/freeclient.go +4 -0

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--- a/les/freeclient.go
+++ b/les/freeclient.go
@@ -193,7 +193,11 @@ func (f *freeClientPool) disconnect(address string) {
 	if f.closed {
 		return
 	}
+	// Short circuit if the peer hasn't been registered.
 	e := f.addressMap[address]
+	if e == nil {
+		return
+	}
 	now := f.clock.Now()
 	if !e.connected {
 		log.Debug("Client already disconnected", "address", address)