Fix silly typo issue. Not sure how the original code worked on my box.

Review URL: http://codereview.chromium.org/146050

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@19063 0039d316-1c4b-4281-b951-d872f2087c98

gclient.py

@@ -1354,7 +1354,8 @@ class GClient(object):
       for entry in prev_entries:
         e_dir = os.path.join(self._root_dir, entry)
         if entry not in entries and os.path.exists(e_dir):
-          if not options.delete_unversioned_trees or CaptureSVNStatus(e_dir):
+          if not self._options.delete_unversioned_trees or \
+             CaptureSVNStatus(e_dir):
             # There are modified files in this entry
             entries[entry] = None  # Keep warning until removed.
             print("\nWARNING: \"%s\" is no longer part of this client.  "