Slightly cleanup for stencil commands
Slightly cleanup for stencil commands

josh-bernstein/cesium,YonatanKra/cesium,CesiumGS/cesium,kaktus40/cesium,YonatanKra/cesium,AnalyticalGraphicsInc/cesium,soceur/cesium,likangning93/cesium,jasonbeverage/cesium,josh-bernstein/cesium,soceur/cesium,hodbauer/cesium,likangning93/cesium,likangning93/cesium,jasonbeverage/cesium,hodbauer/cesium,CesiumGS/cesium,hodbauer/cesium,CesiumGS/cesium,soceur/cesium,AnalyticalGraphicsInc/cesium,likangning93/cesium,likangning93/cesium,geoscan/cesium,progsung/cesium,geoscan/cesium,YonatanKra/cesium,CesiumGS/cesium,YonatanKra/cesium,progsung/cesium,kaktus40/cesium,CesiumGS/cesium