libvpx: Pull from upstream

source/libvpx/md5_utils.c

 /*
  * This code implements the MD5 message-digest algorithm.
  * The algorithm is due to Ron Rivest.  This code was
  * written by Colin Plumb in 1993, no copyright is claimed.
  * This code is in the public domain; do with it what you wish.
  *
  * Equivalent code is available from RSA Data Security, Inc.
  * This code has been tested against that, and is equivalent,
  * except that you don't need to include two pages of legalese
  * with every copy.
  *
  * To compute the message digest of a chunk of bytes, declare an
  * MD5Context structure, pass it to MD5Init, call MD5Update as
  * needed on buffers full of bytes, and then call MD5Final, which
  * will fill a supplied 16-byte array with the digest.
  *
  * Changed so as no longer to depend on Colin Plumb's `usual.h' header
  * definitions
  *  - Ian Jackson <ian@chiark.greenend.org.uk>.
  * Still in the public domain.
  */
 
 #include <string.h>   /* for memcpy() */
 
 #include "md5_utils.h"
 
-void
+static void
 byteSwap(UWORD32 *buf, unsigned words) {
   md5byte *p;
 
   /* Only swap bytes for big endian machines */
   int i = 1;
 
   if (*(char *)&i == 1)
     return;
 
   p = (md5byte *)buf;
@@ skipping 194 matching lines @@
   MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
   MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
 
   buf[0] += a;
   buf[1] += b;
   buf[2] += c;
   buf[3] += d;
 }
 
 #endif