Memory Leaks on Linux

[Andrew-Lees11]

We had reports of Memory leaks when signing/verifying a with Swift-JWT. We recreated this on our own repo JWT along with encryption and decryption. This produced the following memory report: leaks.txt which highlights leaks at:

evp_key = .init(PEM_read_bio_PUBKEY(bio, nil, nil, nil))

This is due to the evp_key not being properly freed after it was referenced by:

var pkey_ctx = EVP_PKEY_CTX_new(evp_key, nil)

(Mirrored for private key).

There are also leaks in encrypt and decrypt where allocated memory from pointers wasn't being deallocated.

[Andrew-Lees11]

These leaks are fixed by PR #36

[Andrew-Lees11]

Closing now fix has been merged and release in BlueRSA 1.0.24