[fix] close #197 for all engines

searx/engines/kickass.py

 def response(resp):
     results = []
 
-    # check if redirect comparing to the True value,
-    # because resp can be a Mock object, and any attribut name returns something.
-    if resp.is_redirect is True:
-        return results
-
     dom = html.fromstring(resp.text)
 
     search_res = dom.xpath('//table[@class="data"]//tr')

searx/search.py

 
     # creating a callback wrapper for the search engine results
     def process_callback(response, **kwargs):
+        # check if redirect comparing to the True value,
+        # because resp can be a Mock object, and any attribut name returns something.
+        if response.is_redirect is True:
+            return
+
         response.search_params = params
 
         timeout_overhead = 0.2  # seconds