9718 update mandoc to 1.14.4

*** 1,9 ****
! /*      $Id: roff_html.c,v 1.11 2017/06/24 14:38:33 schwarze Exp $ */
  /*
   * Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
!  * Copyright (c) 2014, 2017 Ingo Schwarze <schwarze@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
--- 1,9 ----
! /*      $Id: roff_html.c,v 1.12 2018/06/25 14:53:58 schwarze Exp $ */
  /*
   * Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
!  * Copyright (c) 2014, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
*** 80,96 ****
  }
  
  static void
  roff_html_pre_sp(ROFF_HTML_ARGS)
  {
!         struct roffsu    su;
! 
!         SCALE_VS_INIT(&su, 1);
!         if ((n = n->child) != NULL) {
!                 if (a2roffsu(n->string, &su, SCALE_VS) == NULL)
!                         su.scale = 1.0;
!                 else if (su.scale < 0.0)
!                         su.scale = 0.0;
!         }
!         print_otag(h, TAG_DIV, "suh", &su);
!         print_text(h, "\\~");  /* So the div isn't empty. */
  }
--- 80,86 ----
  }
  
  static void
  roff_html_pre_sp(ROFF_HTML_ARGS)
  {
!         print_paragraph(h);
  }