Free memory from getaddrinfo()

We handled this in the failure scenario, but not in the vastly more
common successful case.

common/network/TcpSocket.cxx

@@ -459,6 +459,8 @@ void network::createTcpListeners(std::list<SocketListener*> *listeners,
     freeaddrinfo(ai);
     throw;
   }
+
+  freeaddrinfo(ai);
 }
 
 void network::createTcpListeners(std::list<SocketListener*> *listeners,