Following patch is a fix for a bug in libnetsnmp which, under certain
circumstances, causes a core dump during snmp_shutdown.

(Upstream Bug) #2374 net-snmp is coring when stopped
=====================================================================
--- net-snmp-5.4.1/snmplib/pkcs.c	Tue Mar  5 17:29:50 2013
+++ net-snmp-5.4.1/snmplib/pkcs.mod.c	Tue Mar  5 17:35:30 2013
@@ -1,5 +1,5 @@
 /*
- * Copyright Copyright 2003 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms specified in the COPYING file
  * distributed with the Net-SNMP package.
  */
@@ -105,19 +105,13 @@
 static int
 free_slots(int majorID, int minorID, void *serverarg, void *clientarg)
 {
-    int            slotcount, i;
+    (void) C_Finalize(NULL);
 
     if (pSlot != NULL) {
-        slotcount = pSlot->count;
-        for (i = 0; i < slotcount; i++) {
-            if (pSlot->pSession->hdl != NULL) {
-                free(pSlot->pSession->hdl);
-            }
-        }
-        free(pSlot);
+        SNMP_FREE(pSlot->pSession);
+        SNMP_FREE(pSlot);
     }
 
-    (void) C_Finalize(NULL);
     return 0;
 }