Memory leakage of rsa_new and rsa_free in OpenSSL)

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When using RSA encryption and decryption of OpenSSL, it is found that there will still be Memory leakage after rsa_new () initialization and rsa_free () Release of the RSA struct.My OpenSSL version is 0.9.8l.
The details are as follows:
RSA * RSA = rsa_new ();
Rsa_free (RSA );
The solution is simple: Call the crypto library of OpenSSL and call the API before exiting: Crypto_cleanup_all_ex_dat To clear the data in the global hash table that manages crypto_ex_data to avoid Memory leakage. As follows:
RSA * RSA = rsa_new ();
Rsa_free (RSA );
crypto_cleanup_all_ex_data ();
note that crypto_cleanup_all_ex_data () cannot be called under the potential race-conditions condition.