Fixed issue with try where patchset is passed....

trychange.py

 #!/usr/bin/python
 # Copyright (c) 2009 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.
 """Client-side script to send a try job to the try server. It communicates to
 the try server by either writting to a svn repository or by directly connecting
 to the server by HTTP.
 """
 
 import datetime
@@ skipping 551 matching lines @@
 
     # Convert options.diff into the content of the diff.
     if options.url:
       if options.files:
         parser.error('You cannot specify files and --url at the same time.')
       options.diff = urllib.urlopen(options.url).read()
     elif options.diff:
       if options.files:
         parser.error('You cannot specify files and --diff at the same time.')
       options.diff = gclient_utils.FileRead(options.diff, 'rb')
-    elif options.issue:
+    elif options.issue and options.patchset is None:
       # Retrieve the patch from rietveld when the diff is not specified.
       try:
         import simplejson
       except ImportError:
         parser.error('simplejson library is missing, please install.')
       api_url = 'http://%s/api/%d' % (options.rietveld_url, options.issue)
       contents = simplejson.loads(urllib.urlopen(api_url).read())
       diff_url = ('http://%s/download/issue%d_%d.diff' %
           (options.rietveld_url,  options.issue, contents['patchsets'][-1]))
       diff = GetMungedDiff('', urllib.urlopen(diff_url).readlines())
@@ skipping 59 matching lines @@
   except (InvalidScript, NoTryServerAccess), e:
     if swallow_exception:
       return 1
     print e
     return 1
   return 0
 
 
 if __name__ == "__main__":
   sys.exit(TryChange(None, [], False))