LO on Windows defaults to Vulkan, and Skia tries to load the vulkan DLL, which may not be present on some systems. The library AFAICT should always be in a system directory, so restrict library searching to just there to avoid the possibility of DLL hijacking, just to be safe. Change-Id: I78ad3c7297e613c0316e82c5ff3c0110a02da337 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/121437 Tested-by: Jenkins Reviewed-by: Luboš Luňák <l.lunak@collabora.com>