From 33c2e470b49a346575dbab3e018fd0c2162a478b Mon Sep 17 00:00:00 2001
From: Enji Cooper <ngie@FreeBSD.org>
Date: Wed, 9 Dec 2015 01:24:34 +0000
Subject: [PATCH] Call va_end on ap when vsnprintf fails in run_cmd(..) to
 clean up the variable state

MFC after: 1 week
Reported by: cppcheck
Sponsored by: EMC / Isilon Storage Division
---
 sbin/swapon/swapon.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sbin/swapon/swapon.c b/sbin/swapon/swapon.c
index ed9f5685b6bc..f58143179c2f 100644
--- a/sbin/swapon/swapon.c
+++ b/sbin/swapon/swapon.c
@@ -642,6 +642,7 @@ run_cmd(int *ofd, const char *cmdline, ...)
 	rv = vasprintf(&cmd, cmdline, ap);
 	if (rv == -1) {
 		warn("%s", __func__);
+		va_end(ap);
 		return (rv);
 	}
 	va_end(ap);