Use const attribute for IPAddress parameters

Author: pennam

Diff for: src/Arduino_EthernetConnectionHandler.cpp

@@ -34,7 +34,7 @@ EthernetConnectionHandler::EthernetConnectionHandler(bool const keep_alive)
 
 }
 
-EthernetConnectionHandler::EthernetConnectionHandler(IPAddress ip, IPAddress dns, IPAddress gateway, IPAddress netmask, bool const keep_alive)
+EthernetConnectionHandler::EthernetConnectionHandler(const IPAddress ip, const IPAddress dns, const IPAddress gateway, const IPAddress netmask, bool const keep_alive)
 : ConnectionHandler{keep_alive, NetworkAdapter::ETHERNET}
 ,_ip{ip}
 ,_dns{dns}

Diff for: src/Arduino_EthernetConnectionHandler.h

@@ -32,7 +32,7 @@ class EthernetConnectionHandler : public ConnectionHandler
   public:
 
     EthernetConnectionHandler(bool const keep_alive = true);
-    EthernetConnectionHandler(IPAddress ip, IPAddress dns, IPAddress gateway, IPAddress netmask, bool const keep_alive = true);
+    EthernetConnectionHandler(const IPAddress ip, const IPAddress dns, const IPAddress gateway, const IPAddress netmask, bool const keep_alive = true);
     EthernetConnectionHandler(const char * ip, const char * dns, const char * gateway, const char * netmask, bool const keep_alive = true);