swarm: Add missing privatekey from swarm config w/o swap

swarm/api/config.go

@@ -63,6 +63,7 @@ type Config struct {
 	Cors            string
 	BzzAccount      string
 	BootNodes       string
+	privateKey      *ecdsa.PrivateKey
 }
 
 //create a default config with all parameters to set to defaults
@@ -113,5 +114,14 @@ func (self *Config) Init(prvKey *ecdsa.PrivateKey) {
 	if self.SwapEnabled {
 		self.Swap.Init(self.Contract, prvKey)
 	}
+	self.privateKey = prvKey
 	self.StoreParams.Init(self.Path)
 }
+
+func (self *Config) ShiftPrivateKey() (privKey *ecdsa.PrivateKey) {
+	if self.privateKey != nil {
+		privKey = self.privateKey
+		self.privateKey = nil
+	}
+	return privKey
+}

swarm/swarm.go

@@ -22,6 +22,7 @@ import (
 	"crypto/ecdsa"
 	"fmt"
 	"net"
+	"os"
 	"path/filepath"
 
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
@@ -93,7 +94,7 @@ func NewSwarm(ctx *node.ServiceContext, backend chequebook.Backend, ensClient *e
 	self = &Swarm{
 		config:     config,
 		backend:    backend,
-		privateKey: config.Swap.PrivateKey(),
+		privateKey: config.ShiftPrivateKey(),
 	}
 	log.Debug(fmt.Sprintf("Setting up Swarm service components"))
 
@@ -143,7 +144,8 @@ func NewSwarm(ctx *node.ServiceContext, backend chequebook.Backend, ensClient *e
 		}
 	}
 
-	// set up high level api
+	// SET UP high level api
+	fmt.Fprintf(os.Stderr, "privkey %v\nswap %v\nswapendabled %v\n", self.privateKey, config.Swap, config.SwapEnabled)
 	transactOpts := bind.NewKeyedTransactor(self.privateKey)
 
 	if ensClient == nil {