Fixes GPU detection when running in VMware Fusion, where the GPU entry
lacks a "model" property.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49774Signed-off-by: Brendan Shanks <bshanks@codeweavers.com>
Signed-off-by: Ken Thomases <ken@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>