* rsvg-paint-server.c: (rsvg_paint_server_lin_grad_free),
	(rsvg_paint_server_rad_grad_free): Fix some NULL dereferences.

	* rsvg.c: (rsvg_handle_write), (rsvg_handle_close): Add FIXME
	to places that have half-hearted attempt at handling GError.
	(rsvg_pixbuf_from_file_at_zoom), (rsvg_pixbuf_from_file_at_size):
	Handle case where fopen fails (but not the GError part).