compositor-wayland: Handle HUP or ERR from event loop
compositor-wayland: Handle HUP or ERR from event loop

Otherwise we end up in a busy loop instead of exiting nicely.

Fantu/compositor-spice,eyolfson/weston,mchalupa/weston,Gnurou/weston,Tarnyko/weston-xdg_surface_present,xorgy/weston,sir-murray/weston,Gnurou/weston,jonnylamb/weston,giucam/weston,mchalupa/weston,xorgy/weston,krezovic/weston,krezovic/weston,giucam/weston,Tarnyko/weston-xdg_surface_present,eyolfson/weston,jonnylamb/weston,sir-murray/weston,Fantu/compositor-spice,udoprog/weston,Fantu/compositor-spice,udoprog/weston,kwm81/weston,kwm81/weston