fixup! readapting ConnectionHandler implementation to use setting struct

Author: andreagilardoni

src/CatM1ConnectionHandler.h

@@ -40,6 +40,7 @@ class CatM1ConnectionHandler : public ConnectionHandler
 {
   public:
 
+    CatM1ConnectionHandler();
     CatM1ConnectionHandler(const char * pin, const char * apn, const char * login, const char * pass, RadioAccessTechnologyType rat = CATM1, uint32_t band = BAND_3 | BAND_20 | BAND_19, bool const keep_alive = true);
 
 

src/CellularConnectionHandler.h

@@ -33,7 +33,7 @@
 class CellularConnectionHandler : public ConnectionHandler
 {
   public:
-
+    CellularConnectionHandler();
     CellularConnectionHandler(const char * pin, const char * apn, const char * login, const char * pass, bool const keep_alive = true);
 
 

src/EthernetConnectionHandler.h

@@ -44,6 +44,7 @@ class EthernetConnectionHandler : public ConnectionHandler
 {
   public:
 
+    EthernetConnectionHandler();
     EthernetConnectionHandler(unsigned long const timeout = 15000, unsigned long const responseTimeout = 4000, bool const keep_alive = true);
     EthernetConnectionHandler(const IPAddress ip, const IPAddress dns, const IPAddress gateway, const IPAddress netmask, unsigned long const timeout = 15000, unsigned long const responseTimeout = 4000, bool const keep_alive = true);
     EthernetConnectionHandler(const char * ip, const char * dns, const char * gateway, const char * netmask, unsigned long const timeout = 15000, unsigned long const responseTimeout = 4000, bool const keep_alive = true);

src/GSMConnectionHandler.h

@@ -39,7 +39,7 @@
 class GSMConnectionHandler : public ConnectionHandler
 {
   public:
-
+    GSMConnectionHandler();
     GSMConnectionHandler(const char * pin, const char * apn, const char * login, const char * pass, bool const keep_alive = true);
 
 

src/NBConnectionHandler.h

@@ -39,7 +39,7 @@
 class NBConnectionHandler : public ConnectionHandler
 {
   public:
-
+    NBConnectionHandler();
     NBConnectionHandler(char const * pin, bool const keep_alive = true);
     NBConnectionHandler(char const * pin, char const * apn, bool const keep_alive = true);
     NBConnectionHandler(char const * pin, char const * apn, char const * login, char const * pass, bool const keep_alive = true);

src/WiFiConnectionHandler.h

@@ -62,7 +62,7 @@
 class WiFiConnectionHandler : public ConnectionHandler
 {
   public:
-
+    WiFiConnectionHandler();
     WiFiConnectionHandler(char const * ssid, char const * pass, bool const keep_alive = true);