checkInFoV correction

requested:
https://github.com/GarageGames/Torque3D/issues/1009
crosscheck vs https://github.com/GarageGames/Torque3D/blob/69838bdc8c9bc055b9b1ae76f42b0f28d2a33909/Engine/source/T3D/fps/guiShapeNameHud.cpp#L177-L240 upon which that was based.