[src/trunk]: src/sys/netinet Simplify; clear then set flags to ia4_flags (NFCI)

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b7c648735529
branches:  trunk
changeset: 831555:b7c648735529
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Fri Apr 06 09:19:16 2018 +0000

description:
Simplify; clear then set flags to ia4_flags (NFCI)

diffstat:

 sys/netinet/in.c |  14 ++++++--------
 1 files changed, 6 insertions(+), 8 deletions(-)

diffs (37 lines):

diff -r 165a54499fff -r b7c648735529 sys/netinet/in.c
--- a/sys/netinet/in.c  Fri Apr 06 08:23:40 2018 +0000
+++ b/sys/netinet/in.c  Fri Apr 06 09:19:16 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: in.c,v 1.223 2018/03/06 07:27:55 ozaki-r Exp $ */
+/*     $NetBSD: in.c,v 1.224 2018/04/06 09:19:16 ozaki-r Exp $ */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -91,7 +91,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: in.c,v 1.223 2018/03/06 07:27:55 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: in.c,v 1.224 2018/04/06 09:19:16 ozaki-r Exp $");
 
 #include "arp.h"
 
@@ -1143,14 +1143,12 @@
         * We need to do this early because they maybe adjusted
         * by if_addr_init depending on the address.
         */
-       if (ia->ia4_flags & IN_IFF_DUPLICATED) {
-               ia->ia4_flags &= ~IN_IFF_DUPLICATED;
+       if (ia->ia4_flags & IN_IFF_DUPLICATED)
                hostIsNew = 1;
-       }
-       if (ifp->if_link_state == LINK_STATE_DOWN) {
+       ia->ia4_flags = 0;
+       if (ifp->if_link_state == LINK_STATE_DOWN)
                ia->ia4_flags |= IN_IFF_DETACHED;
-               ia->ia4_flags &= ~IN_IFF_TENTATIVE;
-       } else if (hostIsNew && if_do_dad(ifp))
+       else if (hostIsNew && if_do_dad(ifp))
                ia->ia4_flags |= IN_IFF_TRYTENTATIVE;
 
        /*