Remove unused vars from CSocket and move RecHostAddr

RecHostAddr doesn't need to be a class member, as it is only
used in CSocket::OnDataReceived(), so make it local.

Author: softins

src/socket.cpp

@@ -365,6 +365,8 @@ void CSocket::OnDataReceived()
         use the signal/slot mechanism (i.e. we use messages for that).
     */
 
+    CHostAddress RecHostAddr;
+
     // read block from network interface and query address of sender
     uSockAddr UdpSocketAddr;
 #ifdef _WIN32

src/socket.h

@@ -78,9 +78,6 @@ class CSocket : public QObject
     QMutex Mutex;
 
     CVector<uint8_t> vecbyRecBuf;
-    CHostAddress     RecHostAddr;
-    QHostAddress     SenderAddress;
-    quint16          SenderPort;
 
     CChannel* pChannel; // for client
     CServer*  pServer;  // for server