Fixed #7379: fixed a subtle corner case involving URL encoding in `CommonMiddleware`

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8635 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/middleware/common.py

@@ -80,7 +80,7 @@ class CommonMiddleware(object):
                 else:
                     newurl = urlquote(new_url[1])
                 if request.GET:
-                    newurl += '?' + request.GET.urlencode()
+                    newurl += '?' + request.META['QUERY_STRING']
                 return http.HttpResponsePermanentRedirect(newurl)
 
         return None