更新指纹、优化内存占用

Plugins/ms17017.go

@@ -29,15 +29,18 @@ func MS17010(info *common.HostInfo) error {
 }
 
 func MS17010Scan(info *common.HostInfo) error {
-
 	ip := info.Host
 	// connecting to a host in LAN if reachable should be very quick
 	conn, err := net.DialTimeout("tcp", ip+":445", time.Duration(info.Timeout)*time.Second)
+	defer func() {
+		if conn != nil{
+			conn.Close()
+		}
+	}()
 	if err != nil {
 		//fmt.Printf("failed to connect to %s\n", ip)
 		return err
 	}
-	defer conn.Close()
 	err = conn.SetDeadline(time.Now().Add(time.Duration(info.Timeout) * time.Second))
 	if err != nil {
 		//fmt.Printf("failed to connect to %s\n", ip)