Fix errors found by pychecker
diff --git a/Lib/compiler/symbols.py b/Lib/compiler/symbols.py
index c608f64..8eb5fce 100644
--- a/Lib/compiler/symbols.py
+++ b/Lib/compiler/symbols.py
@@ -191,7 +191,7 @@
         self.add_param('[outmost-iterable]')
 
     def get_names(self):
-        keys = Scope.get_names()
+        keys = Scope.get_names(self)
         return keys
 
 class LambdaScope(FunctionScope):