Re: [PATCH 3/3] mimic unpack-objects when --stdin is used with index-pack

Nicolas Pitre [off-list ref] writes:

It appears that git-unpack-objects writes the last part of the input
buffer to stdout after the pack has been parsed.  This looks a bit
suspicious since the last fill() might have filled the buffer up to
the 4096 byte limit and more data might still be pending on stdin,
but since this is about being a drop-in replacement for unpack-objects
let's simply duplicate the same behavior for now.

This seems to break t5300 when applied on top of everything
else.  The other two numbered patches are Ok.