Update NSS to 3.21 RTM and NSPR to 4.11 RTM

nss/lib/libpkix/pkix_pl_nss/module/pkix_pl_ldaprequest.c

Index: nss/lib/libpkix/pkix_pl_nss/module/pkix_pl_ldaprequest.c
diff --git a/nss/lib/libpkix/pkix_pl_nss/module/pkix_pl_ldaprequest.c b/nss/lib/libpkix/pkix_pl_nss/module/pkix_pl_ldaprequest.c
index 51ffce97ca84e79a62aa238adc50b96c4fa0d5a9..4546e339a5b571692656c7de4850363f3e745738 100644
--- a/nss/lib/libpkix/pkix_pl_nss/module/pkix_pl_ldaprequest.c
+++ b/nss/lib/libpkix/pkix_pl_nss/module/pkix_pl_ldaprequest.c
@@ -263,16 +263,12 @@ 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.