Propagate Masao's fix in initialize which is needed in set too: fix a problem when first parameter is a String and second parameter is a Gtk::IconSize, not nil.
Propagate Masao's fix in initialize which is needed in set too:
fix a problem when first parameter is a String and second
parameter is a Gtk::IconSize, not nil.


benolee/ruby-gnome2,benolee/ruby-gnome2,benolee/ruby-gnome2