fix the bug in ChunkDecoder::post_process(), the original code failed to copy data correctly when some docs are removed, it is revised to copy to destination buffer and increase the pointer to destination buffer.
fix the bug in ChunkDecoder::post_process(),
the original code failed to copy data correctly when some docs are removed,
it is revised to copy to destination buffer and increase the pointer to destination buffer.

pombredanne/izenelib,izenecloud/izenelib,izenecloud/izenelib,pombredanne/izenelib,pombredanne/izenelib,izenecloud/izenelib,pombredanne/izenelib,izenecloud/izenelib