error adding "empty" tag to a track

[Rocco Aliberti]

Trying to add an "empty" tag (by clicking "Add tag" in track properties, without having filled the combo field)
i got this error:

Traceback (most recent call last):
  File "/home/***/exaile/xlgui/properties.py", line 421, in _add_tag
    self._build_from_track(self.current_position)
  File "/home/***/exaile/xlgui/properties.py", line 307, in _build_from_track
    self.tags_table, f, tag, entry, i))
  File "/home/***/exaile/xlgui/properties.py", line 554, in __init__
    self.label.set_attributes(self.__changed_attributes)
AttributeError: 'TagRow' object has no attribute '_TagRow__changed_attributes'

This happens adding the first empty tag listed in the combo, and also if you, after have selected any other tag from the list, clear its name and try to add it.

Doesn't happen with the second "empty" tag in the combo. In this case, clicking the "Add tag" button the Apply button becomes available, and also this seems to me an undesirable behavior.

[Mathias Brodala (mathbr)]

Fixed with r4059.

[Mathias Brodala (mathbr)]

Adding nameless tags is not possible with r4079 anymore.