Bugfix: values of type Enum are now reconstructed with type Enum

bob/io/stream/metadata.py

@@ -73,7 +73,7 @@ class MetaDatum:
         """
         if not isinstance(value, self.dtype):
             if isinstance(value, str) and isinstance(self._value, Enum):  # reconstruct Enum value from name
-                self._value = type(self._value)[value]
+                value = type(self._value)[value]
             # values that can't be saved using hdf5 types are saved as serialized values wrapped in numpy void type
             elif isinstance(value, np.void):
                 value = pickle.loads(value.tobytes())