OpenSSL: Fix memory leak in HMAC_CTX compatibility wrapper function

Commit 5c9a33702f ('OpenSSL: Clean up
crypto_hash_*() to use a single implementation') added a wrapper
function to allow the new OpenSSL API to be used with older OpenSSL
versions. However, the HMAC_CTX_free() wrapper was incorrectly skipping
the call to HMAC_CTX_cleanup() which is still needed to free the
resources OpenSSL allocated internally.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/crypto/crypto_openssl.c

@@ -47,6 +47,7 @@ static HMAC_CTX * HMAC_CTX_new(void)
 
 static void HMAC_CTX_free(HMAC_CTX *ctx)
 {
+	HMAC_CTX_cleanup(ctx);
 	bin_clear_free(ctx, sizeof(*ctx));
 }