Update to NSS 3.16.2 Beta 3.

nss/lib/pk11wrap/pk11cxt.c

 /* 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/. */
 /*
  * This file PK11Contexts which are  used in multipart hashing, 
  * encryption/decryption, and signing/verication operations.
  */
 
 #include "seccomon.h"
 #include "secmod.h"
@@ skipping 736 matching lines @@
 
 /*
  * execute a digest/signature operation
  */
 SECStatus
 PK11_DigestOp(PK11Context *context, const unsigned char * in, unsigned inLen) 
 {
     CK_RV crv = CKR_OK;
     SECStatus rv = SECSuccess;
 
+    if (inLen == 0) {
+        return SECSuccess;
+    }
     if (!in) {
         PORT_SetError(SEC_ERROR_INVALID_ARGS);
         return SECFailure;
     }
 
     /* if we ran out of session, we need to restore our previously stored
      * state.
      */
     context->init = PR_FALSE;
     PK11_EnterContextMonitor(context);
@@ skipping 263 matching lines @@
     context->init = PR_FALSE; /* allow Begin to start up again */
 
 
     if (crv != CKR_OK) {
         PORT_SetError( PK11_MapError(crv) );
         return SECFailure;
     }
     return SECSuccess;
 }