Fix typo (missing "req." prefix on error_302_dict) found by Neil

Norwitz's PyChecker.

Author: gvanrossum

Lib/urllib2.py

@@ -447,7 +447,8 @@ def http_error_302(self, req, fp, code, msg, headers):
         new = Request(newurl, req.get_data())
         new.error_302_dict = {}
         if hasattr(req, 'error_302_dict'):
-            if len(error_302_dict)>10 or req.error_302_dict.has_key(newurl):
+            if len(req.error_302_dict)>10 or \
+               req.error_302_dict.has_key(newurl):
                 raise HTTPError(req.get_full_url(), code,
                                 self.inf_msg + msg, headers)
             new.error_302_dict.update(req.error_302_dict)