Fix memory leaks when calling EVP_PKEY_get1_RSA.

crypto/rsa_private_key_openssl.cc

Index: crypto/rsa_private_key_openssl.cc
diff --git a/crypto/rsa_private_key_openssl.cc b/crypto/rsa_private_key_openssl.cc
index bd00a7382aa14478d77836918a873fb1cd8b6fc6..e3cf04c9bb3e7e8611a684329a64bc1a98eee118 100644
--- a/crypto/rsa_private_key_openssl.cc
+++ b/crypto/rsa_private_key_openssl.cc
@@ -107,11 +107,11 @@ RSAPrivateKey::~RSAPrivateKey() {
 
 RSAPrivateKey* RSAPrivateKey::Copy() const {
   scoped_ptr<RSAPrivateKey> copy(new RSAPrivateKey());
-  RSA* rsa = EVP_PKEY_get1_RSA(key_);
+  ScopedRSA rsa(EVP_PKEY_get1_RSA(key_));
   if (!rsa)
     return NULL;
   copy->key_ = EVP_PKEY_new();
-  if (!EVP_PKEY_set1_RSA(copy->key_, rsa))
+  if (!EVP_PKEY_set1_RSA(copy->key_, rsa.get()))
     return NULL;
   return copy.release();
 }