update ds18b20.c to snprintf

Guo Wenxue

2022-09-22 732d1963ed83abf4e5f1b06ec451a6943421d716

 mqttd/main.c

@@ -464,7 +464,15 @@
            {
                if( strcasestr(value, "on") )
                {
                    log_nrml("Turn buzzer on [%d] times\n", hwconf->beep_times);
          turn_passive_beep(ON, BEEP_FREQ);
                }
      else if( strcasestr(value, "off") )
                {
          turn_passive_beep(OFF, BEEP_FREQ);
                }
      else if( strcasestr(value, "music") )
                { 
          play_little_star();
                }
            }