fix maximize size calculation on non-current desks with shelves
fix maximize size calculation on non-current desks with shelves

tasn/enlightenment,tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,rvandegrift/e,rvandegrift/e,tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tasn/enlightenment,rvandegrift/e,FlorentRevest/Enlightenment