Update Zlib to version 1.2.8

third_party/zlib/uncompr.c

 /* uncompr.c -- decompress a memory buffer
  * Copyright (C) 1995-2003, 2010 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 /* @(#) $Id$ */
 
 #define ZLIB_INTERNAL
 #include "zlib.h"
 
@@ skipping 12 matching lines @@
 */
 int ZEXPORT uncompress (dest, destLen, source, sourceLen)
     Bytef *dest;
     uLongf *destLen;
     const Bytef *source;
     uLong sourceLen;
 {
     z_stream stream;
     int err;
 
-    stream.next_in = (Bytef*)source;
+    stream.next_in = (z_const Bytef *)source;
     stream.avail_in = (uInt)sourceLen;
     /* Check for source > 64K on 16-bit machine: */
     if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
 
     stream.next_out = dest;
     stream.avail_out = (uInt)*destLen;
     if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
 
     stream.zalloc = (alloc_func)0;
     stream.zfree = (free_func)0;
 
     err = inflateInit(&stream);
     if (err != Z_OK) return err;
 
     err = inflate(&stream, Z_FINISH);
     if (err != Z_STREAM_END) {
         inflateEnd(&stream);
         if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
             return Z_DATA_ERROR;
         return err;
     }
     *destLen = stream.total_out;
 
     err = inflateEnd(&stream);
     return err;
 }