Free memory allocated by base64_encode() #442
Merged
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This showed up in nanoarrow's CI: https://github.com/apache/arrow-nanoarrow/actions/runs/9823176470/job/27120757486#step:4:3425
For both encoding and decoding it looks like the pointers will leak if the following R allocation fails (probably unlikely with the size of raw vectors usually encoded/decoded, though).