Variables starting with `s' in bsd/netccitt

• sap_saddr bsd/netccitt/llc_subr.c:212
• sdl_data bsd/netccitt/pk_llcsubr.c:293
• sdlhdr_len bsd/netccitt/llc_var.h:397
• struct bsd/netccitt/ccitt_proto.c:122