ash: Fix a crash when going back to the main uber-tray popup from the network popup.

ash/system/network/tray_network.cc

 // Copyright (c) 2012 The Chromium 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 "ash/system/network/tray_network.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
@@ skipping 450 matching lines @@
   }
 
   // Overridden from ViewClickListener.
   virtual void ClickedOn(views::View* sender) OVERRIDE {
     ash::SystemTrayDelegate* delegate =
         ash::Shell::GetInstance()->tray_delegate();
     // If the info bubble was visible, close it when some other item is clicked
     // on.
     ResetInfoBubble();
 
-    if (sender == footer()->content())
+    if (sender == footer()->content()) {
       Shell::GetInstance()->tray()->ShowDefaultView(BUBBLE_USE_EXISTING);
+      return;
+    }
 
     if (login_ == user::LOGGED_IN_LOCKED)
       return;
 
     if (sender == view_mobile_account_) {
       delegate->ShowCellularURL(topup_url_);
     } else if (sender == setup_mobile_account_) {
       delegate->ShowCellularURL(setup_url_);
     } else if (sender == airplane_) {
       delegate->ToggleAirplaneMode();
@@ skipping 77 matching lines @@
   if (tray_)
     tray_->Update(info);
   if (default_)
     default_->Update();
   if (detailed_)
     detailed_->Update();
 }
 
 }  // namespace internal
 }  // namespace ash