fix double free in mib_carpgroupget() error path

ok claudio@ miko@

diff --git a/usr.sbin/snmpd/mib.c b/usr.sbin/snmpd/mib.c
index c4732fa..8cc556b 100644 (file)
--- a/usr.sbin/snmpd/mib.c
+++ b/usr.sbin/snmpd/mib.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mib.c,v 1.89 2018/06/04 18:05:18 gerhard Exp $        */
+/*     $OpenBSD: mib.c,v 1.90 2018/08/30 12:25:40 jsg Exp $    */
 
 /*
  * Copyright (c) 2012 Joel Knight <joel@openbsd.org>
@@ -2941,7 +2941,6 @@ mib_carpgroupget(u_int idx)
        }
        if (ioctl(s, SIOCGIFGLIST, (caddr_t)&ifgr) == -1) {
                log_warn("SIOCGIFGLIST");
-               free(ifgr.ifgr_groups);
                goto err;
        }
        close(s);