9718 update mandoc to 1.14.4

@@ -1,6 +1,6 @@
-/*      $Id: tag.c,v 1.18 2017/02/17 14:31:52 schwarze Exp $ */
+/*      $Id: tag.c,v 1.19 2018/02/23 16:47:10 schwarze Exp $ */
 /*
  * Copyright (c) 2015, 2016 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

@@ -211,10 +211,13 @@
                 entry = ohash_next(&tag_data, &slot);
         }
         ohash_delete(&tag_data);
         if (stream != NULL)
                 fclose(stream);
+        else
+                close(tag_files.tfd);
+        tag_files.tfd = -1;
 }
 
 void
 tag_unlink(void)
 {