Update NSS to 3.21 RTM and NSPR to 4.11 RTM

nss/lib/base/list.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/. */
 
 /*
  * list.c
  *
  * This contains the implementation of NSS's thread-safe linked list.
  */
 
@@ skipping 199 matching lines @@
     } else {
         list->head = node;
     }
     ++list->count;
     return PR_SUCCESS;
 }
 
 NSS_IMPLEMENT PRStatus
 nssList_Add(nssList *list, void *data)
 {
-    PRStatus nssrv;
     NSSLIST_LOCK_IF(list);
-    nssrv = nsslist_add_element(list, data);
+    (void)nsslist_add_element(list, data);
     NSSLIST_UNLOCK_IF(list);
     return PR_SUCCESS;
 }
 
 NSS_IMPLEMENT PRStatus
 nssList_AddUnique(nssList *list, void *data)
 {
     PRStatus nssrv;
     nssListElement *node;
     NSSLIST_LOCK_IF(list);
@@ skipping 159 matching lines @@
     return node->data;
 }
 
 NSS_IMPLEMENT PRStatus
 nssListIterator_Finish(nssListIterator *iter)
 {
     iter->current = iter->list->head;
     return (iter->lock) ? PZ_Unlock(iter->lock) : PR_SUCCESS;
 }