Fixes some memory leaks in //runtime/bin

runtime/bin/socket.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef BIN_SOCKET_H_
 #define BIN_SOCKET_H_
 
 #include <map>
 
 #include "platform/globals.h"
@@ skipping 171 matching lines @@
  public:
   explicit InterfaceSocketAddress(struct sockaddr* sa,
                                   const char* interface_name,
                                   intptr_t interface_index)
       : socket_address_(new SocketAddress(sa)),
         interface_name_(interface_name),
         interface_index_(interface_index) {}
 
   ~InterfaceSocketAddress() {
     delete socket_address_;
-    free(const_cast<char*>(interface_name_));
   }
 
   SocketAddress* socket_address() const { return socket_address_; }
   const char* interface_name() const { return interface_name_; }
   int interface_index() const { return interface_index_; }
 
  private:
   SocketAddress* socket_address_;
   const char* interface_name_;
   intptr_t interface_index_;
@@ skipping 212 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ListeningSocketRegistry);
 };
 
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_SOCKET_H_