Update NSPR to 4.12 and NSS to 3.23 on iOS

nss/lib/freebl/rsa.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/. */
 
 /*
  * RSA key generation, public key op, private key op.
  */
 #ifdef FREEBL_NO_DEPEND
 #include "stubs.h"
 #endif
@@ skipping 729 matching lines @@
         int modLen = key->modulus.len;
         if (key->modulus.data[0] == 0) {
            modLen--;
         }
         keySizeInBits = modLen * PR_BITS_PER_BYTE;
         SECITEM_TO_MPINT(key->modulus, &n);
         hasModulus = PR_TRUE;
     }
     /* if we have the modulus and one prime, calculate the second. */
     if ((prime_count == 1) && (hasModulus)) {
-        mp_div(&n,&p,&q,&r);
-        if (mp_cmp_z(&r) != 0) {
+        if (mp_div(&n,&p,&q,&r) != MP_OKAY || mp_cmp_z(&r) != 0) {
            /* p is not a factor or n, fail */
            err = MP_BADARG;
            goto cleanup;
         }
         prime_count++;
     }
 
     /* If we didn't have enough primes try to calculate the primes from
      * the exponents */
     if (prime_count < 2) {
@@ skipping 327 matching lines @@
     /* The last bp->next value was initialized with out
      * of rsabp->array pointer and must be set to NULL 
      */ 
     rsabp->array[RSA_BLINDING_PARAMS_MAX_CACHE_SIZE - 1].next = NULL;
     
     bp          = rsabp->array;
     rsabp->bp   = NULL;
     rsabp->free = bp;
 
     /* List elements are keyed using the modulus */
-    SECITEM_CopyItem(NULL, &rsabp->modulus, &key->modulus);
-
-    return SECSuccess;
+    return SECITEM_CopyItem(NULL, &rsabp->modulus, &key->modulus);
 }
 
 static SECStatus
 get_blinding_params(RSAPrivateKey *key, mp_int *n, unsigned int modLen,
                     mp_int *f, mp_int *g)
 {
     RSABlindingParams *rsabp           = NULL;
     blindingParams    *bpUnlinked      = NULL;
     blindingParams    *bp;
     PRCList           *el;
@@ skipping 433 matching lines @@
 PRBool bl_parentForkedAfterC_Initialize;
 
 /*
  * Set fork flag so it can be tested in SKIP_AFTER_FORK on relevant platforms.
  */
 void BL_SetForkState(PRBool forked)
 {
     bl_parentForkedAfterC_Initialize = forked;
 }