artistsview: Correctly access artisttile on toggle_selection
This is a regression introduced by commit
74dc676d. ArtistTile now inherits
from a GtkListBoxRow, there is no need to call the get_child
method
to access it.
This is a regression introduced by commit
74dc676d. ArtistTile now inherits
from a GtkListBoxRow, there is no need to call the get_child
method
to access it.