Fixed subscription handler logic.

Subscription.h

@@ -24,7 +24,7 @@ namespace core
 
       virtual int process(coreutils::ZString &request, std::stringstream &out, TCPSession &session);
 
-      virtual int onSubscribe(TCPSession &session, Subscription *subscription);
+      virtual int onSubscribe(TCPSession &session);
 
       int event(std::stringstream &out);