fix flow issue

src/views/Wallet/components/LeftNavigation/components/common.js

@@ -6,7 +6,7 @@ import * as ModalActions from 'actions/ModalActions';
 import { toggleDeviceDropdown } from 'actions/WalletActions';
 import type { State } from 'flowtype';
 
-export type StateProps = {
+export type StateProps = {|
     connect: $ElementType<State, 'connect'>,
     accounts: $ElementType<State, 'accounts'>,
     router: $ElementType<State, 'router'>,
@@ -16,9 +16,9 @@ export type StateProps = {
     wallet: $ElementType<State, 'wallet'>,
     devices: $ElementType<State, 'devices'>,
     pending: $ElementType<State, 'pending'>,
-}
+|}
 
-export type DispatchProps = {
+export type DispatchProps = {|
     toggleDeviceDropdown: typeof toggleDeviceDropdown,
     addAccount: typeof DiscoveryActions.addAccount,
     acquireDevice: typeof TrezorConnectActions.acquire,
@@ -27,6 +27,6 @@ export type DispatchProps = {
     gotoDeviceSettings: typeof RouterActions.gotoDeviceSettings,
     onSelectDevice: typeof RouterActions.selectDevice,
     gotoExternalWallet: typeof ModalActions.gotoExternalWallet,
-}
+|}
 
-export type Props = StateProps & DispatchProps;
+export type Props = {|...StateProps, ...DispatchProps|};

src/views/Wallet/components/LeftNavigation/index.js

@@ -229,7 +229,7 @@ class LeftNavigation extends React.PureComponent<Props, State> {
                                     <WalletTypeIconWrapper>
                                         <WalletTypeIcon
                                             onClick={(e) => {
-                                                if (isDeviceReady) {
+                                                if (selectedDevice && isDeviceReady) {
                                                     this.props.duplicateDevice(selectedDevice);
                                                     e.stopPropagation();
                                                 }