Fix the decorator issues.

jedi/evaluate/finder.py

@@ -414,7 +414,7 @@ def _apply_decorators(evaluator, context, node):
             # Create a trailer and evaluate it.
             trailer = tree.Node('trailer', trailer)
             trailer.parent = dec
-            dec_values = context.eval_trailer(dec_values, trailer)
+            dec_values = evaluator.eval_trailer(context, dec_values, trailer)
 
         if not len(dec_values):
             debug.warning('decorator not found: %s on %s', dec, node)

jedi/evaluate/instance.py

@@ -222,7 +222,7 @@ class BoundMethod(Context):
     def py__call__(self, var_args):
         function_execution = InstanceFunctionExecution(
             self._instance,
-            self._class_context.parent_context,
+            self.parent_context,
             self._function.funcdef,
             var_args
         )