Fixes #74206.

Fixes #74206.

Thu Apr 25 23:49:01 2002  Kristian Rietveld  <kris@gtk.org>

        Fixes #74206.

        * gtk/gtktreeprivate.h: add _gtk_tree_view_column_count_special_cells

        * gtk/gtktreeview.c (_gtk_tree_view_column_has_editable_cell),
        (_gtk_tree_view_column_get_editable_cell): remove a space which made
        the code look ugly
        (_gtk_tree_view_column_count_special_cells): new function,
        (gtk_tree_view_column_cell_process_action): if there's only one
        activatable cell, the whole column will activate that renderer.