[patch] Add kvm_close in mib_hrsystemprocs function

[Nan Xiao]

Hi tech@,

Maybe kvm_close is needed if kvm_getprocs returns NULL here? Sorry if I
am wrong, thanks!

Index: mib.c
===================================================================
RCS file: /cvs/src/usr.sbin/snmpd/mib.c,v
retrieving revision 1.87
diff -u -p -r1.87 mib.c
--- mib.c       25 May 2018 08:23:15 -0000      1.87
+++ mib.c       30 May 2018 08:15:19 -0000
@@ -516,8 +516,10 @@ mib_hrsystemprocs(struct oid *oid, struc
                        return (-1);

                if (kvm_getprocs(kd, KERN_PROC_ALL, 0,
-                   sizeof(struct kinfo_proc), &val) == NULL)
+                   sizeof(struct kinfo_proc), &val) == NULL) {
+                       kvm_close(kd);
                        return (-1);
+               }

                *elm = ber_add_integer(*elm, val);
                ber_set_header(*elm, BER_CLASS_APPLICATION, SNMP_T_GAUGE32);

-- 
Best Regards
Nan Xiao