xwayland/launcher: Use %m instead of manual strerror(errno)
xwayland/launcher: Use %m instead of manual strerror(errno)

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