duplicate word, found by igor(1)

[mandoc.git] / html.c

diff --git a/html.c b/html.c
index fc55e881b78481e762c785b0a5b3b6c69bf6afe4..65f7eea408fd34620a2845afc5214a9ca24b04dd 100644 (file)
--- a/html.c
+++ b/html.c
@@ -1,4 +1,4 @@
-/*     $Id: html.c,v 1.219 2017/07/15 17:57:51 schwarze Exp $ */
+/*     $Id: html.c,v 1.220 2017/09/06 16:24:25 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -250,6 +250,8 @@ html_make_id(const struct roff_node *n)
 
        buf = NULL;
        deroff(&buf, n);
+       if (buf == NULL)
+               return NULL;
 
        /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */