Initialize member to NULL in SecureSocket.

runtime/bin/secure_socket.h

 // Copyright (c) 2012, 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_SECURE_SOCKET_H_
 #define BIN_SECURE_SOCKET_H_
 
 #ifdef DART_IO_SECURE_SOCKET_DISABLED
 #error "secure_socket.h can only be included on builds with SSL enabled"
 #endif
@@ skipping 36 matching lines @@
     kWritePlaintext,
     kReadEncrypted,
     kWriteEncrypted,
     kNumBuffers,
     kFirstEncrypted = kReadEncrypted
   };
 
   SSLFilter()
       : callback_error(NULL),
         ssl_(NULL),
+        socket_side_(NULL),
         string_start_(NULL),
         string_length_(NULL),
         handshake_complete_(NULL),
         bad_certificate_callback_(NULL),
         in_handshake_(false),
         hostname_(NULL) { }
 
   void Init(Dart_Handle dart_this);
   void Connect(const char* hostname,
                SSL_CTX* context,
@@ skipping 57 matching lines @@
   void InitializeBuffers(Dart_Handle dart_this);
   void InitializePlatformData();
 
   DISALLOW_COPY_AND_ASSIGN(SSLFilter);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_SECURE_SOCKET_H_