Memory leak in openssl quic modules

[vanc]

Memory leak in openssl quic modules

[brbzull0]

Hi @vanc, Interesting, I can have a look at this if you are not doing it already, specially at the leak 2, 3. Will follow up back here.

So, you are right, not a trivial fix.

I am not an expert on Rust, so any help/direction will be appreciated here. After giving this a thought, what do you guys think about this possible(?) solutions.

1. Should we copy and return a copy of the DER as Vec<u8>, I know this changed already from this type, but worth considering maybe.
2. Add a new API to free up the allocated memory by i2d_X509. I don't really like this as it seems we only manually free up memory on some particular cases.

Thanks.

cc: @ghedo @LPardue