cient/eth: Update wallet config after reconfigure

When reconfiguring, the wallet settings on the baseWallet type
were not being updated. When updating the RPC providers list
on an unconnected wallet, the new providers were not being stored,
so on Connect, it would attempt to connect to the old providers list.

client/asset/eth/eth.go

@@ -401,7 +401,9 @@ type baseWallet struct {
 	log        dex.Logger
 	dir        string
 	walletType string
-	settings   map[string]string
+
+	settingsMtx sync.RWMutex
+	settings    map[string]string
 
 	gasFeeLimitV uint64 // atomic
 
@@ -741,6 +743,8 @@ func (w *ETHWallet) Connect(ctx context.Context) (_ *sync.WaitGroup, err error)
 		// }
 		return nil, asset.ErrWalletTypeDisabled
 	case walletTypeRPC:
+		w.settingsMtx.RLock()
+		defer w.settingsMtx.RUnlock()
 		endpoints := strings.Split(w.settings[providersKey], " ")
 		ethCfg, err := ethChainConfig(w.net)
 		if err != nil {
@@ -861,6 +865,10 @@ func (w *ETHWallet) Reconfigure(ctx context.Context, cfg *asset.WalletConfig, cu
 		}
 	}
 
+	w.settingsMtx.Lock()
+	w.settings = cfg.Settings
+	w.settingsMtx.Unlock()
+
 	atomic.StoreUint64(&w.baseWallet.gasFeeLimitV, gasFeeLimit)
 
 	return false, nil