Revert changes to get_exception_handler

Author: rpkilby

rest_framework/views.py

@@ -232,9 +232,9 @@ def get_exception_handler_context(self):
         """
         return {
             'view': self,
-            'args': self.args,
-            'kwargs': self.kwargs,
-            'request': self.request,
+            'args': getattr(self, 'args', ()),
+            'kwargs': getattr(self, 'kwargs', {}),
+            'request': getattr(self, 'request', None)
         }
 
     def get_view_name(self):