bug#35548: image.c uses deprecated rsvg_handle_write etc.

[Eli Zaretskii]

> From: Andy Moreton <andrewjmoreton@gmail.com>
> Date: Thu, 11 Jul 2019 13:18:45 +0100
> 
> On Wed 10 Jul 2019, Paul Eggert wrote:
> 
> > Thanks, I attempted to port that patch to MS-Windows, installed the 
> > attached,
> > and am marking this bug as done.
> 
> This patch breaks SVG support on 64bit MSYS2 Windows builds, using
> librsvg 2.44.14.

Should be fixed now, thanks.