Fix chunk size check.

If the chunk returned in chunk_recycle is too small to satisfy
the current request, the code would still allow it to be reused.
Make sure the chunk size is checked in all cases:

Bug: 21633176
(cherry picked from commit c429191e01e516d97bd501465289a351ef48d63a)

Change-Id: I12750496bffb8956b03bbe29823a7a61503350cf
1 file changed