Fix #167

src/doomdef.h

src/hardware/hw_cache.c

src/hardware/hw_clip.c

src/hardware/hw_clip.h

src/hardware/hw_light.c

src/hardware/hw_main.c

src/p_maputl.c

src/p_setup.c

src/p_spec.c

src/r_bsp.c

src/r_defs.h

src/r_picformats.c

src/r_picformats.h

src/r_plane.c

src/r_segs.c

src/r_textures.c

src/r_textures.h