replace the use of calculate buffer by a constant buffer size for json size

ZsensorBH1750.ino

@@ -55,8 +55,7 @@ void MeasureLightIntensity()
 {
   if (millis() > (timebh1750 + TimeBetweenReadingBH1750)) {//retriving value of Lux, FtCd and Wattsm2 from BH1750
     trc(F("Creating BH1750 buffer"));
-    const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(3);
-    StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
+    StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
     JsonObject& BH1750data = jsonBuffer.createObject();
     
     timebh1750 = millis();

ZsensorBME280.ino

@@ -129,8 +129,7 @@ void MeasureTempHumAndPressure()
       trc(F("Failed to read from Weather Sensor BME280!"));
     }else{
         trc(F("Creating BME280 buffer"));
-        const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(6);
-        StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
+        StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
         JsonObject& BME280data = jsonBuffer.createObject();
       // Generate Temperature in degrees C
       if(BmeTempC != persisted_bme_tempc || bme280_always){

ZsensorDHT.ino

@@ -49,8 +49,7 @@ void MeasureTempAndHum(){
       trc(F("Failed to read from DHT sensor!"));
     }else{
       trc(F("Creating DHT buffer"));
-      const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(2);
-      StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
+      StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
       JsonObject& DHTdata = jsonBuffer.createObject();
       if(h != persistedh || dht_always){
         DHTdata.set("hum", (float)h);

ZsensorINA226.ino

@@ -52,8 +52,7 @@ void MeasureINA226(){
     if (millis() > (timeINA226 + TimeBetweenReadingINA226)) {//retriving value of temperature and humidity of the box from DHT every xUL
         timeINA226 = millis();
         trc(F("Creating INA226 buffer"));
-        const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(3);
-        StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
+        StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
         JsonObject& INA226data = jsonBuffer.createObject();
         // Topic on which we will send data
         trc(F("Retrieving electrical data"));

ZsensorTSL2561.ino

@@ -92,8 +92,7 @@ void MeasureLightIntensityTSL2561()
     timetsl2561 = millis();
 
     trc(F("Creating TSL2561 buffer"));
-    const int JSON_MSG_CALC_BUFFER = JSON_OBJECT_SIZE(3);
-    StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;
+    StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
     JsonObject& TSL2561data = jsonBuffer.createObject();
     
     sensors_event_t event;