gtk_widget_modify_style

[Philippe Ribet <p ribet worldonline fr>]

gtk_widget_modify_style: this function first get the current style in
'old_style'.
As old_style isn't used after, I think this part may be removed.

Please, who is able to answer my previous mail about quark and signals
(or give me pointers to document) ?

    Thanks for any help,

            Philippe Ribet