Fix _timezone_offset type and uniform type usage in TimeSerivice

Author: pennam

src/utility/time/TimeService.cpp

@@ -92,7 +92,7 @@ unsigned long TimeService::getTime()
 #endif
 }
 
-void TimeService::setTimeZoneData(int offset, unsigned int dst_until)
+void TimeService::setTimeZoneData(long offset, unsigned long dst_until)
 {
   DEBUG_INFO("ArduinoIoTCloudTCP::%s offset[%d] dst_unitl[%ul]", __FUNCTION__, offset, dst_until);
   _timezone_offset = offset;

src/utility/time/TimeService.h

@@ -49,7 +49,7 @@ class TimeService
   void          begin  (ConnectionHandler * con_hdl);
   unsigned long getTime();
   unsigned long getLocalTime();
-  void          setTimeZoneData(int offset, unsigned int valid_until);
+  void          setTimeZoneData(long offset, unsigned long valid_until);
   /* Helper function to convert a timeString into a UNIX timestamp. The format specifiers match the POSIX function strptime()*/
   static unsigned long getTimeFromString(const String& timeString, const String& timeStringFormat);
 
@@ -65,7 +65,7 @@ class TimeService
   static bool isTimeValid(unsigned long const time);
 
 private:
-  unsigned long _timezone_offset;
+  long _timezone_offset;
   unsigned long _timezone_dst_until;
 
 };