fix failed rename of args

TBR=maruel@chromium.org

Review URL: http://codereview.chromium.org/6714008

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@78668 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/git_cl/git_cl.py b/git_cl/git_cl.py
index 2005c19..56a2fa6 100644
--- a/git_cl/git_cl.py
+++ b/git_cl/git_cl.py
@@ -1172,7 +1172,7 @@
     return 1
   issue_arg = args[0]
 
-  if re.match(r'\d+', input):
+  if re.match(r'\d+', issue_arg):
     # Input is an issue id.  Figure out the URL.
     issue = issue_arg
     server = settings.GetDefaultServerUrl()
@@ -1188,7 +1188,7 @@
     match = re.match(r'.*?/issue(\d+)_\d+.diff', issue_url)
     if match:
       issue = match.group(1)
-      url = input
+      url = issue_arg
     else:
       DieWithError('Must pass an issue ID or full URL for '
           '\'Download raw patch set\'')