close watches in potential panics

[mrkagelui]

looking at the recv loop goroutine (

zk/conn.go

Lines 466 to 482 in 27bc0d6

	go func() {
	defer close(c.closeChan) // tell send loop to exit
	defer wg.Done()
	var err error
	if c.debugCloseRecvLoop {
	err = errors.New("DEBUG: close recv loop")
	} else {
	err = c.recvLoop(c.conn)
	}
	if err != io.EOF || c.logInfo {
	c.logger.Printf("recv loop terminated: %v", err)
	}
	if err == nil {
	panic("zk: recvLoop should never return nil error")
	}
	}()

), it seems that if somehow the goroutine panics, the watches (the open channels) are not closed, and hence the receiver won't know if the watches are still active, am I right? should we just add to the defers to close them?