Make sure we re-allocate gl data if it has been deleted due to a context closing.
Make sure we re-allocate gl data if it has been deleted due to a context closing.

tellingmachine/MatterControl,larsbrubaker/MatterControl,CodeMangler/MatterControl,unlimitedbacon/MatterControl,MatterHackers/MatterControl,jlewin/MatterControl,larsbrubaker/MatterControl,unlimitedbacon/MatterControl,mmoening/MatterControl,unlimitedbacon/MatterControl,rytz/MatterControl,MatterHackers/MatterControl,jlewin/MatterControl,jlewin/MatterControl,mmoening/MatterControl,mmoening/MatterControl,tellingmachine/MatterControl,jlewin/MatterControl,larsbrubaker/MatterControl,rytz/MatterControl,rytz/MatterControl,CodeMangler/MatterControl,MatterHackers/MatterControl,larsbrubaker/MatterControl,unlimitedbacon/MatterControl,CodeMangler/MatterControl