Minor refactor of sending response, modified guard

Author: michalpokusa

adafruit_httpserver/server.py

@@ -326,12 +326,14 @@ def poll(self):
                 # Handle the request
                 response = self._handle_request(request, handler)
 
+                if response is None:
+                    return
+
                 # Send the response
-                if response is not None:
-                    response._send()  # pylint: disable=protected-access
+                response._send()  # pylint: disable=protected-access
 
-                    if self.debug:
-                        _debug_response_sent(response)
+                if self.debug:
+                    _debug_response_sent(response)
 
         except Exception as error:  # pylint: disable=broad-except
             if isinstance(error, OSError):