fix build break

proxy/shadowsocks/config_json.go

@@ -12,14 +12,14 @@ import (
 
 func (this *Config) UnmarshalJSON(data []byte) error {
 	type JsonConfig struct {
-		Cipher   *serial.StringLiteral `json:"method"`
+		Cipher   serial.StringLiteral `json:"method"`
-		Password *serial.StringLiteral `json:"password"`
+		Password serial.StringLiteral `json:"password"`
 	}
 	jsonConfig := new(JsonConfig)
 	if err := json.Unmarshal(data, jsonConfig); err != nil {
 		return err
 	}
-  if this.Password == nil {
+	if len(jsonConfig.Password) == 0 {
 		log.Error("Shadowsocks: Password is not specified.")
 		return internal.ErrorBadConfiguration
 	}
@@ -32,11 +32,11 @@ func (this *Config) UnmarshalJSON(data []byte) error {
 	switch jsonConfig.Cipher.String() {
 	case "aes-256-cfb":
 		this.Cipher = &AesCfb{
-      KeyBytes: 32
+			KeyBytes: 32,
 		}
 	case "aes-128-cfb":
 		this.Cipher = &AesCfb{
-      KeyBytes: 32
+			KeyBytes: 32,
 		}
 	default:
 		log.Error("Shadowsocks: Unknown cipher method: ", jsonConfig.Cipher)