getnick doean't return error if was set before

BOB.cpp

@@ -409,6 +409,9 @@ namespace client
 		{
 			m_Keys = m_CurrentDestination->GetKeys ();
 			m_Nickname = operand;
+		}
+		if (m_Nickname == operand)
+		{	
 			std::string msg ("Nickname set to ");
 			msg += m_Nickname;
 			SendReplyOK (msg.c_str ());