Temp dir cleanup:...

base/file_util_win.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 "base/file_util.h"
 
 #include <windows.h>
 #include <propvarutil.h>
 #include <psapi.h>
 #include <shellapi.h>
@@ skipping 588 matching lines @@
                              const FilePath::StringType& prefix,
                              FilePath* new_dir) {
   base::ThreadRestrictions::AssertIOAllowed();
 
   FilePath path_to_create;
   srand(static_cast<uint32>(time(NULL)));
 
   for (int count = 0; count < 50; ++count) {
     // Try create a new temporary directory with random generated name. If
     // the one exists, keep trying another path name until we reach some limit.
-    path_to_create = base_dir;
-
     string16 new_dir_name;
     new_dir_name.assign(prefix);
     new_dir_name.append(base::IntToString16(rand() % kint16max));
 
-    path_to_create = path_to_create.Append(new_dir_name);
+    path_to_create = base_dir.Append(new_dir_name);
     if (::CreateDirectory(path_to_create.value().c_str(), NULL)) {
       *new_dir = path_to_create;
       return true;
     }
   }
 
   return false;
 }
 
 bool CreateNewTempDirectory(const FilePath::StringType& prefix,
@@ skipping 493 matching lines @@
       uint8 unused = *(touch + offset);
       offset += step_size;
     }
     FreeLibrary(dll_module);
   }
 
   return true;
 }
 
 }  // namespace file_util