put_multipart_chunk should NOT consume the chunk parameter

[szguoxz]

trafficstars

pub async fn put_multipart_chunk( &self, chunk: vec, path: &str, part_number: u32, upload_id: &str, content_type: &str, ) -> Result<Part, S3Error>

parameter chunk really should be of type &[u8] instead of a vec. This makes a big difference as if my part is 100MB, you will require 100MB more memory. use &[u8] will allow me to reuse the read buffer.

[urkle]

Duplicate of #351