Version：Latest, v1.43.2
Description：

func safeAsyncClose(b *Broker) {
	tmp := b // local var prevents clobbering in goroutine
	go withRecover(func() {
		if connected, _ := tmp.Connected(); connected {
			if err := tmp.Close(); err != nil {
				Logger.Println("Error closing broker", tmp.ID(), ":", err)
			}
		}
	})
}

annotation says "local var prevents clobbering in goroutine", how it works? I mean when safeAsyncClose is called, the local var b is just a copy pointing to the Broker, even if goroutine overwrites b, other goroutines will not perceive it.

thanks for help :)