fix bool leakage

libraries/SondeLib/Sonde.h

@@ -145,7 +145,7 @@ struct st_kisstnc {
 };
 
 struct st_mqtt {
-	bool active;
+	int active;
 	char id[64];
 	char host[64];
 	int port;

libraries/SondeLib/mqtt.cpp

@@ -23,7 +23,7 @@ void MQTT::init(const char* ip, uint16_t port, const char* id, const char *usern
     this->prefix = prefix;
     
     char buffer[20];
-    snprintf(buffer, 20, "%s%d", id, random(0, 1000));
+    snprintf(buffer, 20, "%s%6ld", id, random(0, 1000));
     this->id = buffer;
 
     Serial.println("[MQTT] pubsub client");