if (ctx->write_resource_flags & WRITE_RESOURCE_FLAG_PACK_STREAMS)
reserve_size += sizeof(struct alt_chunk_table_header_disk);
memset(ctx->chunk_csizes, 0, reserve_size);
if (ctx->write_resource_flags & WRITE_RESOURCE_FLAG_PACK_STREAMS)
reserve_size += sizeof(struct alt_chunk_table_header_disk);
memset(ctx->chunk_csizes, 0, reserve_size);