Update NSS to 3.21 RTM and NSPR to 4.11 RTM

nss/lib/libpkix/pkix_pl_nss/module/pkix_pl_ldaprequest.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/. */
 /*
  * pkix_pl_ldaprequest.c
  *
  */
 
 #include "pkix_pl_ldaprequest.h"
 
@@ skipping 245 matching lines @@
 
 /*
  * FUNCTION: pkix_pl_LdapRequest_Destroy
  * (see comments for PKIX_PL_DestructorCallback in pkix_pl_system.h)
  */
 static PKIX_Error *
 pkix_pl_LdapRequest_Destroy(
         PKIX_PL_Object *object,
         void *plContext)
 {
-        PKIX_PL_LdapRequest *ldapRq = NULL;
-
         PKIX_ENTER(LDAPREQUEST, "pkix_pl_LdapRequest_Destroy");
         PKIX_NULLCHECK_ONE(object);
 
         PKIX_CHECK(pkix_CheckType(object, PKIX_LDAPREQUEST_TYPE, plContext),
                     PKIX_OBJECTNOTLDAPREQUEST);
 
-        ldapRq = (PKIX_PL_LdapRequest *)object;
-
         /*
          * All dynamic fields in an LDAPRequest are allocated
          * in an arena, and will be freed when the arena is destroyed.
          */
 
 cleanup:
 
         PKIX_RETURN(LDAPREQUEST);
 }
 
@@ skipping 466 matching lines @@
         SECItem **pRequestBuf,
         void *plContext)
 {
         PKIX_ENTER(LDAPREQUEST, "pkix_pl_LdapRequest_GetEncoded");
         PKIX_NULLCHECK_TWO(request, pRequestBuf);
 
         *pRequestBuf = request->encoded;
 
         PKIX_RETURN(LDAPREQUEST);
 }