Comment 44 for bug 179988

Looking at the Gtk patch, it doesn't look like it would solve our problem:

http://bugzilla.gnome.org/attachment.cgi?id=99752

I was incorrect in thinking that cairo_win32_printing_surface_create() did not need an HDC, but it does. Our bug comes from that value being null.
I'm sure that the new stuff would also fail with a null HDC. I still suspect a stack or malloc problem causing an alignment problem, though I am probably wrong about that, too. ^^