Typo fix for non-x86 builds.

nss/lib/freebl/poly1305/poly1305.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/. */
 
 /* This implementation of poly1305 is by Andrew Moon
  * (https://github.com/floodyberry/poly1305-donna) and released as public
  * domain. */
 
 #include <string.h>
 #include <stdint.h>
 
 #include "poly1305.h"
 
 #if defined(NSS_X86) || defined(NSS_X64)
 /* We can assume little-endian. */
 static uint32_t U8TO32_LE(const unsigned char *m) {
         uint32_t r;
         memcpy(&r, m, sizeof(r));
         return r;
 }
 
 static void U32TO8_LE(unsigned char *m, uint32_t v) {
         memcpy(m, &v, sizeof(v));
 }
 #else
-static void U8TO32_LE(const unsigned char *m) {
+static uint32_t U8TO32_LE(const unsigned char *m) {
         return (uint32_t)m[0] |
                (uint32_t)m[1] << 8 |
                (uint32_t)m[2] << 16 |
                (uint32_t)m[3] << 24;
 }
 
 static void U32TO8_LE(unsigned char *m, uint32_t v) {
         m[0] = v;
         m[1] = v >> 8;
         m[2] = v >> 16;
@@ skipping 208 matching lines @@
         f0 = ((state->h0      ) | (state->h1 << 26)) + (uint64_t)U8TO32_LE(&state->key[0]);
         f1 = ((state->h1 >>  6) | (state->h2 << 20)) + (uint64_t)U8TO32_LE(&state->key[4]);
         f2 = ((state->h2 >> 12) | (state->h3 << 14)) + (uint64_t)U8TO32_LE(&state->key[8]);
         f3 = ((state->h3 >> 18) | (state->h4 <<  8)) + (uint64_t)U8TO32_LE(&state->key[12]);
 
         U32TO8_LE(&mac[ 0], f0); f1 += (f0 >> 32);
         U32TO8_LE(&mac[ 4], f1); f2 += (f1 >> 32);
         U32TO8_LE(&mac[ 8], f2); f3 += (f2 >> 32);
         U32TO8_LE(&mac[12], f3);
 }