[Coverity] Fix uninitialized member

content/browser/download/drag_download_file.cc

 // Copyright (c) 2011 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 "content/browser/download/drag_download_file.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "content/browser/download/download_stats.h"
@@ skipping 16 matching lines @@
     const std::string& referrer_encoding,
     TabContents* tab_contents)
     : file_stream_(file_stream),
       url_(url),
       referrer_(referrer),
       referrer_encoding_(referrer_encoding),
       tab_contents_(tab_contents),
       drag_message_loop_(MessageLoop::current()),
       is_started_(false),
       is_successful_(false),
+#if defined(OS_WIN)
+      is_running_nested_message_loop_(false),
+#endif
       download_manager_(NULL),
       download_manager_observer_added_(false),
       download_item_(NULL) {
 #if defined(OS_WIN)
   DCHECK(!file_name_or_path.empty() && !file_stream.get());
   file_name_ = file_name_or_path;
 #elif defined(OS_POSIX)
   DCHECK(!file_name_or_path.empty() && file_stream.get());
   file_path_ = file_name_or_path;
 #endif
@@ skipping 177 matching lines @@
 
 void DragDownloadFile::QuitNestedMessageLoop() {
   AssertCurrentlyOnDragThread();
 
   if (is_running_nested_message_loop_) {
     is_running_nested_message_loop_ = false;
     MessageLoop::current()->Quit();
   }
 }
 #endif