Switch to OpenSSL's |EVP_PKEY_up_ref| signature.

crypto/rsa_private_key.cc

Index: crypto/rsa_private_key.cc
diff --git a/crypto/rsa_private_key.cc b/crypto/rsa_private_key.cc
index 746bf28bd74d3ad05cd898db063022192bc54c26..3c00f48447973c751056983fc3b1489a47080431 100644
--- a/crypto/rsa_private_key.cc
+++ b/crypto/rsa_private_key.cc
@@ -62,7 +62,8 @@ std::unique_ptr<RSAPrivateKey> RSAPrivateKey::CreateFromKey(EVP_PKEY* key) {
   if (EVP_PKEY_type(key->type) != EVP_PKEY_RSA)
     return nullptr;
   std::unique_ptr<RSAPrivateKey> copy(new RSAPrivateKey);
-  copy->key_ = EVP_PKEY_up_ref(key);
+  EVP_PKEY_up_ref(key);
+  copy->key_ = key;
   return copy;
 }