Updated xeth instances to take extra param for ui.Interface

Please be aware that if any of the instances on xeth.frontend are called
the program will crash due to the default, temporarily, frontend
interface.

cmd/utils/cmd.go

@@ -167,7 +167,7 @@ func KeyTasks(keyManager *crypto.KeyManager, KeyRing string, GenAddr bool, Secre
 
 func StartRpc(ethereum *eth.Ethereum, RpcListenAddress string, RpcPort int) {
 	var err error
-	ethereum.RpcServer, err = rpchttp.NewRpcHttpServer(xeth.New(ethereum), RpcListenAddress, RpcPort)
+	ethereum.RpcServer, err = rpchttp.NewRpcHttpServer(xeth.New(ethereum, nil), RpcListenAddress, RpcPort)
 	if err != nil {
 		clilogger.Errorf("Could not start RPC interface (port %v): %v", RpcPort, err)
 	} else {