Fix bug in RectangleGeometry where array was indexed past its length.
Fix bug in RectangleGeometry where array was indexed past its length.

AnimatedRNG/cesium,aelatgt/cesium,likangning93/cesium,progsung/cesium,omh1280/cesium,NaderCHASER/cesium,ggetz/cesium,jasonbeverage/cesium,kiselev-dv/cesium,wallw-bits/cesium,AnalyticalGraphicsInc/cesium,geoscan/cesium,oterral/cesium,ggetz/cesium,jason-crow/cesium,josh-bernstein/cesium,NaderCHASER/cesium,likangning93/cesium,denverpierce/cesium,wallw-bits/cesium,emackey/cesium,wallw-bits/cesium,jason-crow/cesium,esraerik/cesium,aelatgt/cesium,josh-bernstein/cesium,emackey/cesium,kiselev-dv/cesium,AnimatedRNG/cesium,jason-crow/cesium,hodbauer/cesium,esraerik/cesium,soceur/cesium,AnalyticalGraphicsInc/cesium,geoscan/cesium,CesiumGS/cesium,soceur/cesium,kiselev-dv/cesium,omh1280/cesium,jasonbeverage/cesium,AnimatedRNG/cesium,esraerik/cesium,esraerik/cesium,ggetz/cesium,omh1280/cesium,YonatanKra/cesium,YonatanKra/cesium,CesiumGS/cesium,ggetz/cesium,likangning93/cesium,denverpierce/cesium,likangning93/cesium,AnimatedRNG/cesium,CesiumGS/cesium,likangning93/cesium,wallw-bits/cesium,hodbauer/cesium,emackey/cesium,denverpierce/cesium,jason-crow/cesium,emackey/cesium,kaktus40/cesium,CesiumGS/cesium,YonatanKra/cesium,denverpierce/cesium,kaktus40/cesium,oterral/cesium,YonatanKra/cesium,aelatgt/cesium,oterral/cesium,progsung/cesium,NaderCHASER/cesium,hodbauer/cesium,aelatgt/cesium,omh1280/cesium,soceur/cesium,CesiumGS/cesium,kiselev-dv/cesium