This fixes a number of things that are warnings in the Mac compiler....

import/cross/gz_compressor.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 29 matching lines @@
 #include "import/cross/memory_buffer.h"
 #include "import/cross/memory_stream.h"
 #include "zutil.h"
 
 const size_t kChunkSize = 16384;
 
 namespace o3d {
 
 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 GzCompressor::GzCompressor(StreamProcessor *callback_client)
-    : callback_client_(callback_client),
-      stream_is_closed_(false) {
+    : stream_is_closed_(false),
+      callback_client_(callback_client) {
   strm_.zalloc = Z_NULL;
   strm_.zfree = Z_NULL;
   strm_.opaque = Z_NULL;
 
   // Store this, so we can later check if it's OK to start processing
   init_result_ = deflateInit2(
       &strm_,
       Z_DEFAULT_COMPRESSION,
       Z_DEFLATED,
       MAX_WBITS + 16,  // 16 means write out gzip header/trailer
@@ skipping 78 matching lines @@
       if (client_result != 0) {
         return client_result;  // propagate callback errors
       }
     }
   } while (strm_.avail_out == 0);
 
   return result;
 }
 
 }  // namespace o3d