Update third_party/nss to NSS 3.15.4.

nss/lib/certdb/polcyxtn.c

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 /*
  * Support for various policy related extensions
  */
 
 #include "seccomon.h"
 #include "secport.h"
@@ skipping 625 matching lines @@
     /* decode the user notice */
     rv = SEC_QuickDERDecodeItem(arena, oidSeq, CERT_OidSeqTemplate, &newSeqItem);
 
     if ( rv != SECSuccess ) {
         goto loser;
     }
 
     return(oidSeq);
     
 loser:
+    if (arena) {
+        PORT_FreeArena(arena, PR_FALSE);
+    }
     return(NULL);
 }
 
 
 void
 CERT_DestroyOidSequence(CERTOidSequence *oidSeq)
 {
     if ( oidSeq != NULL ) {
         PORT_FreeArena(oidSeq->arena, PR_FALSE);
     }
@@ skipping 161 matching lines @@
     if (certInhibitAny == NULL || dest == NULL) {
         return SECFailure;
     }
 
     if (SEC_ASN1EncodeItem (arena, dest, certInhibitAny,
                             CERT_InhibitAnyTemplate) == NULL) {
         rv = SECFailure;
     }
     return(rv);
 }