Update net/third_party/nss to NSS 3.15.4.

net/third_party/nss/ssl/sslinit.c

 /*
  * NSS utility functions
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "prtypes.h"
 #include "prinit.h"
 #include "seccomon.h"
 #include "secerr.h"
 #include "ssl.h"
 #include "sslimpl.h"
 
 static int ssl_inited = 0;
 
 SECStatus
 ssl_Init(void)
 {
     if (!ssl_inited) {
         if (ssl_InitializePRErrorTable() != SECSuccess) {
             PORT_SetError(SEC_ERROR_NO_MEMORY);
             return (SECFailure);
         }
+
+#ifdef DEBUG
+        ssl3_CheckCipherSuiteOrderConsistency();
+#endif
+
         ssl_inited = 1;
     }
     return SECSuccess;
 }