Fix a crash in realmd.

That crash occurs when realmd get an unknown packet and try to "shutdown" the socket.

Note that: don't try to release an ACE_Message_Block if it is _not_ dynamically allocated.

--HG--
branch : trunk

src/trinityrealm/RealmSocket.cpp

@@ -60,9 +60,6 @@ RealmSocket::~RealmSocket(void)
     if (msg_queue())
         msg_queue()->close();
 
-    if (input_buffer_.length() != 0)
-        input_buffer_.release();
-
     // delete RealmSocketObject must never be called from our code.
     closing_ = true;