[#2080] morph: Close morph clients

Could be related to "websocket users limit reached" on the `neo-go` server
side when an SN/IR is rebooting repeatedly.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

CHANGELOG.md

@@ -43,6 +43,7 @@ Changelog for NeoFS Node
 - ObjectID signature output in the CLI (#2104)
 - Pack arguments of `setPrice` invocation during contract update (#2078)
 - `neofs-cli object hash` panic (#2079)
+- Closing `neo-go` WS clients on shutdown and switch processes (#2080)
 
 ### Removed
 - `-g` option from `neofs-cli control ...` and `neofs-cli container create` commands (#2089)

cmd/neofs-node/morph.go

@@ -62,6 +62,8 @@ func initMorphComponents(c *cfg) {
 		fatalOnErr(err)
 	}
 
+	c.onShutdown(cli.Close)
+
 	if err := cli.SetGroupSignerScope(); err != nil {
 		c.log.Info("failed to set group signer scope, continue with Global", zap.Error(err))
 	}

pkg/morph/client/constructor.go

@@ -153,6 +153,12 @@ func (c *Client) newCli(endpoint string) (*rpcclient.WSClient, *actor.Actor, err
 		return nil, nil, fmt.Errorf("WS client creation: %w", err)
 	}
 
+	defer func() {
+		if err != nil {
+			cli.Close()
+		}
+	}()
+
 	err = cli.Init()
 	if err != nil {
 		return nil, nil, fmt.Errorf("WS client initialization: %w", err)