Implements a virtual destructor on the BaseRequestHandler class.
Implements a virtual destructor on the BaseRequestHandler class.

Implements a virtual destructor on the BaseRequestHandler class to protect against undefined behavior in
the event that a derived BaseRequestHandler class has a destructor and an object of such derived class
is destroyed through a pointer to its base class.

chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin