some minor correction after codacy checks (#82)

need to merge it before RFM69 pull request

ZgatewayIR.ino

@@ -158,7 +158,6 @@ void MQTTtoIR(char * topicOri, char * datacallback) {
     
     //We look into the subject to see if a special Bits number is defined 
   String topic = topicOri;
-  int valueRPT = 0;
   unsigned int valueBITS  = 0;
   int pos = topic.lastIndexOf(IRbitsKey);       
   if (pos != -1){
@@ -168,6 +167,7 @@ void MQTTtoIR(char * topicOri, char * datacallback) {
     trc(String(valueBITS));
   }
   //We look into the subject to see if a special repeat number is defined 
+  int valueRPT = 0;
   int pos2 = topic.lastIndexOf(IRRptKey);
   if (pos2 != -1) {
     pos2 = pos2 + strlen(IRRptKey);

ZsensorBH1750.ino

@@ -1,4 +1,4 @@
-/*  
+  /*  
   OpenMQTTGateway Addon  - ESP8266 or Arduino program for home automation 
 
    Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal  and a MQTT broker 
@@ -110,7 +110,7 @@ void MeasureLightIntensity()
       // Generate Lux
       if(Lux != persistedll || bh1750_always){
         char lux[7];
-        sprintf(lux,"%d",Lux);
+        sprintf(lux,"%u",Lux);
         trc(F("Sending Lux to MQTT"));
         trc(String(lux));
         client.publish(LUX,lux);

ZsensorBME280.ino

@@ -124,7 +124,6 @@ void MeasureTempHumAndPressure()
 
   if (millis() > (timebme280 + TimeBetweenReadingbme280)) {
     timebme280 = millis();
-    unsigned int i=0;
     static float persisted_bme_tempc;
     static float persisted_bme_tempf;
     static float persisted_bme_hum;