[OTS] Fix assertion failure on Windows debug build

src/woff2.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This is the implementation of decompression of the proposed WOFF Ultra
 // Condensed file format.
 
 #include <cassert>
 #include <cstdlib>
 #include <vector>
@@ skipping 1007 matching lines @@
       std::memcpy(result + table->dst_offset, transform_buf,
           transform_length);
     } else {
       if (!ReconstructTransformed(tables, table->tag,
             transform_buf, transform_length, result, result_length)) {
         return OTS_FAILURE();
       }
     }
     if (continue_valid) {
       transform_buf += transform_length;
-      if (transform_buf > &uncompressed_buf[uncompressed_buf.size()]) {
+      if (transform_buf > &uncompressed_buf[0] + uncompressed_buf.size()) {
         return OTS_FAILURE();
       }
     }
   }
 
   return FixChecksums(tables, result);
 }
 
 }  // namespace ots