Fix bad variable reuse.

apachedex/__init__.py

@@ -490,13 +490,13 @@ class AggregateSiteUrl(argparse.Action):
       '--skip-base': None,
   }
   def __call__(self, parser, namespace, values, option_string=None):
-    action = self.__argument_to_aggregator[option_string]
+    action = base_action = self.__argument_to_aggregator[option_string]
     dest = getattr(namespace, self.dest)
     for value in values:
       match = re.compile(value).match
-      if action is not None:
+      if base_action is not None:
         match_suffix = re.compile(value + '(?P<suffix>.*)').match
-        action = partial(action,
+        action = partial(base_action,
           suffix=lambda x: match_suffix(x).group('suffix'))
       dest.append((value, match, action))