small cleanup
small cleanup

Makio64/ThreeCSG,sshirokov/ThreeBSP,chandlerprall/ThreeCSG,koreldan/ThreeCSG,lucidogen/ThreeCSG,lucidogen/ThreeCSG,Wilt/ThreeCSG,elmarquez/ThreeCSG,magneval/ThreeCSG,Makio64/ThreeCSG,magneval/ThreeCSG,koreldan/ThreeCSG,chandlerprall/ThreeCSG