node: close AccountsManager in new Close method

node/node.go

@@ -121,6 +121,32 @@ func New(conf *Config) (*Node, error) {
 	}, nil
 }
 
+// Close releases resources acquired in Node constructor New.
+func (n *Node) Close() error {
+	n.lock.Lock()
+	defer n.lock.Unlock()
+
+	// Close account manager
+	var accmanErr error
+	if n.accman != nil {
+		accmanErr = n.accman.Close()
+		if accmanErr == nil {
+			n.accman = nil
+		}
+	}
+
+	// Remove the keystore if it was created ephemerally.
+	var keystoreErr error
+	if n.ephemeralKeystore != "" {
+		keystoreErr = os.RemoveAll(n.ephemeralKeystore)
+	}
+
+	if accmanErr != nil {
+		return accmanErr
+	}
+	return keystoreErr
+}
+
 // Register injects a new service into the node's stack. The service created by
 // the passed constructor must be unique in its type with regard to sibling ones.
 func (n *Node) Register(constructor ServiceConstructor) error {
@@ -435,18 +461,9 @@ func (n *Node) Stop() error {
 	// unblock n.Wait
 	close(n.stop)
 
-	// Remove the keystore if it was created ephemerally.
-	var keystoreErr error
-	if n.ephemeralKeystore != "" {
-		keystoreErr = os.RemoveAll(n.ephemeralKeystore)
-	}
-
 	if len(failure.Services) > 0 {
 		return failure
 	}
-	if keystoreErr != nil {
-		return keystoreErr
-	}
 	return nil
 }