Fix compilation with FreeRDP master
Fix compilation with FreeRDP master

context_size has been renamed to ContextSize, this patch fixes it

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