avoid missing configuration file error

go/topology/topology.go

@@ -6,6 +6,7 @@ import (
 	"code.google.com/p/weed-fs/go/storage"
 	"errors"
 	"io/ioutil"
+	"log"
 	"math/rand"
 )
 
@@ -54,8 +55,8 @@ func (t *Topology) loadConfiguration(configurationFile string) error {
 	if e == nil {
 		t.configuration, e = NewConfiguration(b)
 		return e
-	}else{
-    log.Println("Using default configurations.")
+	} else {
+		log.Println("Using default configurations.")
 	}
 	return nil
 }