Fix crashing bug where device_path is set to unknown.

chromeos_network.cc

 // Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromeos_network.h"  // NOLINT
 
 #include <algorithm>
 #include <vector>
 #include <cstring>
 
@@ skipping 335 matching lines @@
   default_bool = false;
   properties.Retrieve(kAutoConnectProperty, &default_bool);
   info->auto_connect = default_bool;
 
   // Device
   glib::Value val;
   if (properties.Retrieve(kDeviceProperty, &val)) {
     const gchar* path = static_cast<const gchar*>(g_value_get_boxed (&val));
     info->device_path = NewStringCopy(path);
   } else {
-    info->device_path = NewStringCopy(kUnknownString);
+    info->device_path = NULL;
   }
 }
 
 // Returns a ServiceInfo object populated with data from a
 // given DBus object path.
 //
 // returns true on success.
 bool ParseServiceInfo(const char* path, ServiceInfo *info) {
   dbus::Proxy service_proxy(dbus::GetSystemBusConnection(),
                             kConnmanServiceName,
@@ skipping 901 matching lines @@
 }
 
 extern "C"
 bool ChromeOSSetCertPath(const char* service_path, const char* cert_path) {
   return SetServiceStringProperty(service_path, kCertPathProperty, cert_path);
 }
 
 
 
 }  // namespace chromeos