handle blockchain_disconnect when wallet init in offline mode

src/actions/Web3Actions.js

@@ -289,9 +289,7 @@ export const estimateGasLimit = (network: string, $options: EstimateGasOptions):
     return limit.toString();
 };
 
-export const disconnect = (coinInfo: any): ThunkAction => (dispatch: Dispatch, getState: GetState): void => {
-    // incoming "coinInfo" from TrezorConnect is CoinInfo | EthereumNetwork type
-    const network: string = coinInfo.shortcut.toLowerCase();
+export const disconnect = (network: string): ThunkAction => (dispatch: Dispatch, getState: GetState): void => {
     // check if Web3 was already initialized
     const instance = getState().web3.find(w3 => w3.network === network);
     if (instance) {

src/actions/ethereum/BlockchainActions.js

@@ -86,10 +86,11 @@ export const estimateGasLimit = (network: string, data: string, value: string, g
 
 export const subscribe = (network: string): PromiseAction<void> => async (dispatch: Dispatch, getState: GetState): Promise<void> => {
     const accounts: Array<string> = getState().accounts.filter(a => a.network === network).map(a => a.address); // eslint-disable-line no-unused-vars
-    await TrezorConnect.blockchainSubscribe({
+    const response = await TrezorConnect.blockchainSubscribe({
         accounts,
         coin: network,
     });
+    if (!response.success) return;
     // init web3 instance if not exists
     await dispatch(Web3Actions.initWeb3(network));
 };

src/reducers/BlockchainReducer.js

@@ -50,7 +50,12 @@ const onError = (state: State, action: BlockchainError): State => {
         }]);
     }
 
-    return state;
+    return state.concat([{
+        shortcut,
+        connected: false,
+        fee: '0',
+        block: 0,
+    }]);
 };
 
 const onBlock = (state: State, action: BlockchainBlock): State => {