fix consul Init

consul/consul.go

@@ -23,7 +23,7 @@ type Config struct {
 //Init 初始化consul连接
 func Init(config *Config) error {
 	if config == nil {
-		conf = &Config{
+		config = &Config{
 			Address: "127.0.0.1:8500",
 		}
 	}