Fix overzealous CHECK in custom EC_KEYs.

net/android/keystore_openssl.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/android/keystore_openssl.h"
 
 #include <jni.h>
 #include <openssl/bn.h>
 #include <openssl/dsa.h>
 #include <openssl/ec.h>
@@ skipping 74 matching lines @@
 };
 
 // ExDataDup is called when one of the RSA, DSA or EC_KEY objects is
 // duplicated. We don't support this and it should never happen.
 int ExDataDup(CRYPTO_EX_DATA* to,
               const CRYPTO_EX_DATA* from,
               void** from_d,
               int index,
               long argl,
               void* argp) {
-  CHECK(false);
+  CHECK_EQ((void*)NULL, *from_d);
   return 0;
 }
 
 // ExDataFree is called when one of the RSA, DSA or EC_KEY object is freed.
 void ExDataFree(void* parent,
                 void* ptr,
                 CRYPTO_EX_DATA* ad,
                 int index,
                 long argl,
                 void* argp) {
@@ skipping 479 matching lines @@
     default:
       LOG(WARNING)
           << "GetOpenSSLPrivateKeyWrapper() called with invalid key type";
       return NULL;
   }
   return pkey.release();
 }
 
 }  // namespace android
 }  // namespace net