[src/trunk]: src/sys/netipsec Fix that prev isn't cleared on retry

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

details:   https://anonhg.NetBSD.org/src/rev/8c66fb7b7e68
branches:  trunk
changeset: 355669:8c66fb7b7e68
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Wed Aug 09 06:04:41 2017 +0000

description:
Fix that prev isn't cleared on retry

diffstat:

 sys/netipsec/key.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (31 lines):

diff -r a4d9f2eabe1c -r 8c66fb7b7e68 sys/netipsec/key.c
--- a/sys/netipsec/key.c        Wed Aug 09 04:45:38 2017 +0000
+++ b/sys/netipsec/key.c        Wed Aug 09 06:04:41 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: key.c,v 1.220 2017/08/09 04:29:36 ozaki-r Exp $        */
+/*     $NetBSD: key.c,v 1.221 2017/08/09 06:04:41 ozaki-r Exp $        */
 /*     $FreeBSD: src/sys/netipsec/key.c,v 1.3.2.3 2004/02/14 22:23:23 bms Exp $        */
 /*     $KAME: key.c,v 1.191 2001/06/27 10:46:49 sakane Exp $   */
 
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.220 2017/08/09 04:29:36 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.221 2017/08/09 06:04:41 ozaki-r Exp $");
 
 /*
  * This code is referd to RFC 2367
@@ -6670,10 +6670,11 @@
 static void
 key_acquire_sendup_pending_mbuf(void)
 {
-       struct mbuf *m, *prev = NULL;
+       struct mbuf *m, *prev;
        int error;
 
 again:
+       prev = NULL;
        mutex_enter(&key_misc.lock);
        m = key_acquire_mbuf_head;
        /* Get an earliest mbuf (one at the tail of the list) */