small fix for lazy property

rhodecode/lib/vcs/utils/lazy.py

@@ -1,27 +1,28
 class LazyProperty(object):
     """
     Decorator for easier creation of ``property`` from potentially expensive to
     calculate attribute of the class.
 
     Usage::
 
       class Foo(object):
           @LazyProperty
           def bar(self):
               print 'Calculating self._bar'
               return 42
 
     Taken from http://blog.pythonisito.com/2008/08/lazy-descriptors.html and
     used widely.
     """
 
     def __init__(self, func):
         self._func = func
+        self.__module__ = func.__module__
         self.__name__ = func.__name__
         self.__doc__ = func.__doc__
 
     def __get__(self, obj, klass=None):
         if obj is None:
-            return None
+            return self
         result = obj.__dict__[self.__name__] = self._func(obj)
         return result