Fix: Error.getattr() should not mask absence of __notes__ attribute

Author: pcisar

src/firebird/base/types.py

@@ -76,6 +76,8 @@ def __init__(self, *args, **kwargs):
         for name, value in kwargs.items():
             setattr(self, name, value)
     def __getattr__(self, name):
+        if name == '__notes__':
+            raise AttributeError
         return None
 
 # Singletons