Quick fix for gclient revert.

gclient.py

 #!/usr/bin/python
 # Copyright (c) 2010 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.
 
 """A wrapper script to manage a set of client modules in different SCM.
 
 This script is intended to be used to help basic management of client
 program sources residing in one or more Subversion modules and Git
 repositories, along with other modules it depends on, also in Subversion or Git,
@@ skipping 986 matching lines @@
   return client.RunOnDeps('diff', args)
 
 
 def CMDrevert(parser, args):
   """Revert all modifications in every dependencies."""
   parser.add_option("--nohooks", action="store_true",
                     help="don't run hooks after the revert is complete")
   (options, args) = parser.parse_args(args)
   # --force is implied.
   options.force = True
+  options.deps_os = None
   client = GClient.LoadCurrentConfig(options)
   if not client:
     raise gclient_utils.Error("client not configured; see 'gclient config'")
   return client.RunOnDeps('revert', args)
 
 
 def CMDrunhooks(parser, args):
   """Runs hooks for files that have been modified in the local working copy."""
   parser.add_option("--force", action="store_true", default=True,
                     help="Deprecated. No effect.")
@@ skipping 91 matching lines @@
 
 
 if "__main__" == __name__:
   try:
     sys.exit(Main(sys.argv[1:]))
   except gclient_utils.Error, e:
     print >> sys.stderr, "Error: %s" % str(e)
     sys.exit(1)
 
 # vim: ts=2:sw=2:tw=80:et: