Fix: Get object with checksum leak when retry happens

[TingDaoK]

• We allocate buffers and checksum, but in case of error, we never free them.
• The fix is just free them on either case
• TODO: I think we can probably move the checksum stuff into the send_data so it gets clean up with request/response data and make it cleaner.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #346 (15f8a76) into main (a0ee6a9) will decrease coverage by 0.11%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #346      +/-   ##
==========================================
- Coverage   89.63%   89.53%   -0.11%     
==========================================
  Files          17       17              
  Lines        4940     4931       -9     
==========================================
- Hits         4428     4415      -13     
- Misses        512      516       +4     

Files Changed	Coverage Δ
source/s3_meta_request.c	92.60% <100.00%> (-0.60%)	⬇️

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[graebm]

Sorry to get hung up on dumb scripts 😓

[graebm]

fix & ship