xwayland: Prevent kwin crashing when an xwayland socket cannot be created
If the X11 socket directory has wrong permissions, XwaylandSocket will refuse to create sockets. Crashing in that case is undesired, just continue executing without X.
If the X11 socket directory has wrong permissions, XwaylandSocket will refuse to create sockets. Crashing in that case is undesired, just continue executing without X.