upstream: Remove support for obsolete host/port syntax.

host/port was added in 2001 as an alternative to host:port syntax for
the benefit of IPv6 users.  These days there are establised standards
for this like [::1]:22 and the slash syntax is easily mistaken for CIDR
notation, which OpenSSH now supports for some things.  Remove the slash
notation from ListenAddress and PermitOpen.  bz#2335, patch from jjelen
at redhat.com, ok markus@

OpenBSD-Commit-ID: fae5f4e23c51a368d6b2d98376069ac2b10ad4b7
diff --git a/misc.h b/misc.h
index 47177d8..5b4325a 100644
--- a/misc.h
+++ b/misc.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: misc.h,v 1.78 2018/12/27 03:25:25 djm Exp $ */
+/* $OpenBSD: misc.h,v 1.79 2019/01/23 21:50:56 dtucker Exp $ */
 
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -57,6 +57,7 @@
 int	 a2port(const char *);
 int	 a2tun(const char *, int *);
 char	*put_host_port(const char *, u_short);
+char	*hpdelim2(char **, char *);
 char	*hpdelim(char **);
 char	*cleanhostname(char *);
 char	*colon(char *);