xsfbs.sh: use 'local' now that policy allows it
xsfbs.sh: use 'local' now that policy allows it

Policy 3.7.3 allows /bin/sh scripts to use 'local'.

facboy/xserver-xorg-video-qxl,RsrchBoy/xserver-xorg-input-synaptics,philipn/xserver-xorg-input-synaptics,RsrchBoy/xserver-xorg-input-synaptics,philipn/xserver-xorg-input-synaptics,facboy/xserver-xorg-video-qxl,facboy/xserver-xorg-video-qxl,philipn/xserver-xorg-input-synaptics,facboy/xserver-xorg-video-qxl