MD4: fix compiler warnings and code style nits

 * MD4 Message-Digest Algorithm (RFC 1320).

 *

 * Homepage:

 * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md4

 http://openwall.info/wiki/people/solar/software/public-domain-source-code/md4

 *

 * Author:

 * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>

 *

 * This software was written by Alexander Peslyak in 2001.  No copyright is

 * claimed, and the software is hereby placed in the public domain.

 * In case this attempt to disclaim copyright and place the software in the

 * public domain is deemed null and void, then the software is

 * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the

 * general public under the following terms:

 * claimed, and the software is hereby placed in the public domain.  In case

 * this attempt to disclaim copyright and place the software in the public

 * domain is deemed null and void, then the software is Copyright (c) 2001

 * Alexander Peslyak and it is hereby released to the general public under the

 * following terms:

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted.

  saved_lo = ctx->lo;

  if((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo)

    ctx->hi++;

  ctx->hi += size >> 29;

  ctx->hi += (MD4_u32plus)size >> 29;

  used = saved_lo & 0x3f;

  memset(&ctx->buffer[used], 0, available - 8);

  ctx->lo <<= 3;

  ctx->buffer[56] = ctx->lo;

  ctx->buffer[57] = ctx->lo >> 8;

  ctx->buffer[58] = ctx->lo >> 16;

  ctx->buffer[59] = ctx->lo >> 24;

  ctx->buffer[60] = ctx->hi;

  ctx->buffer[61] = ctx->hi >> 8;

  ctx->buffer[62] = ctx->hi >> 16;

  ctx->buffer[63] = ctx->hi >> 24;

  ctx->buffer[56] = curlx_ultouc((ctx->lo)&0xff);

  ctx->buffer[57] = curlx_ultouc((ctx->lo >> 8)&0xff);

  ctx->buffer[58] = curlx_ultouc((ctx->lo >> 16)&0xff);

  ctx->buffer[59] = curlx_ultouc((ctx->lo >> 24)&0xff);

  ctx->buffer[60] = curlx_ultouc((ctx->hi)&0xff);

  ctx->buffer[61] = curlx_ultouc((ctx->hi >> 8)&0xff);

  ctx->buffer[62] = curlx_ultouc((ctx->hi >> 16)&0xff);

  ctx->buffer[63] = curlx_ultouc(ctx->hi >> 24);

  body(ctx, ctx->buffer, 64);

  result[0] = ctx->a;

  result[1] = ctx->a >> 8;

  result[2] = ctx->a >> 16;

  result[3] = ctx->a >> 24;

  result[4] = ctx->b;

  result[5] = ctx->b >> 8;

  result[6] = ctx->b >> 16;

  result[7] = ctx->b >> 24;

  result[8] = ctx->c;

  result[9] = ctx->c >> 8;

  result[10] = ctx->c >> 16;

  result[11] = ctx->c >> 24;

  result[12] = ctx->d;

  result[13] = ctx->d >> 8;

  result[14] = ctx->d >> 16;

  result[15] = ctx->d >> 24;

  result[0] = curlx_ultouc((ctx->a)&0xff);

  result[1] = curlx_ultouc((ctx->a >> 8)&0xff);

  result[2] = curlx_ultouc((ctx->a >> 16)&0xff);

  result[3] = curlx_ultouc(ctx->a >> 24);

  result[4] = curlx_ultouc((ctx->b)&0xff);

  result[5] = curlx_ultouc((ctx->b >> 8)&0xff);

  result[6] = curlx_ultouc((ctx->b >> 16)&0xff);

  result[7] = curlx_ultouc(ctx->b >> 24);

  result[8] = curlx_ultouc((ctx->c)&0xff);

  result[9] = curlx_ultouc((ctx->c >> 8)&0xff);

  result[10] = curlx_ultouc((ctx->c >> 16)&0xff);

  result[11] = curlx_ultouc(ctx->c >> 24);

  result[12] = curlx_ultouc((ctx->d)&0xff);

  result[13] = curlx_ultouc((ctx->d >> 8)&0xff);

  result[14] = curlx_ultouc((ctx->d >> 16)&0xff);

  result[15] = curlx_ultouc(ctx->d >> 24);

  memset(ctx, 0, sizeof(*ctx));

}

void Curl_md4it(unsigned char *output, const unsigned char *input, size_t len)

{

  MD4_CTX ctx;

  MD4Init(&ctx);

  MD4Update(&ctx, input, curlx_uztoui(len));

  MD4Final(output, &ctx);

  MD4_Init(&ctx);

  MD4_Update(&ctx, input, curlx_uztoui(len));

  MD4_Final(output, &ctx);

}

#endif /* defined(USE_NSS) || defined(USE_OS400CRYPTO) */