fix fd leak in an error path

ok mpi@

diff --git a/usr.sbin/snmpd/mib.c b/usr.sbin/snmpd/mib.c
index 8cc556b..104b8a6 100644 (file)
--- a/usr.sbin/snmpd/mib.c
+++ b/usr.sbin/snmpd/mib.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mib.c,v 1.90 2018/08/30 12:25:40 jsg Exp $    */
+/*     $OpenBSD: mib.c,v 1.91 2018/08/31 05:20:36 jsg Exp $    */
 
 /*
  * Copyright (c) 2012 Joel Knight <joel@openbsd.org>
@@ -2937,7 +2937,7 @@ mib_carpgroupget(u_int idx)
 
        if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) {
                log_warn("alloc");
-               return (NULL);
+               goto err;
        }
        if (ioctl(s, SIOCGIFGLIST, (caddr_t)&ifgr) == -1) {
                log_warn("SIOCGIFGLIST");