put mqtt port into a contant

OpenMQTTGateway.ino

@@ -61,7 +61,7 @@ RCSwitch mySwitch = RCSwitch();
 decode_results results;
 
 // client parameters
-PubSubClient client(mqtt_server, 1883, callback, eClient);
+PubSubClient client(mqtt_server, mqtt_port, callback, eClient);
 
 //MQTT last attemps reconnection date
 int lastReconnectAttempt = 0;

User_config.h

@@ -34,6 +34,7 @@ CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFT
 #define mqtt_server "192.168.1.17"
 #define mqtt_user "your_username" // not compulsory only if your broker needs authentication
 #define mqtt_password "your_password" // not compulsory only if your broker needs authentication
+#define mqtt_port 1883
 
 // Update these with values suitable for your network.
 #ifdef ESP8266 // for nodemcu, weemos and esp8266