Update NSS to 3.21 RTM and NSPR to 4.11 RTM

nss/lib/util/nssrwlk.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/. */
 
 #include "nssrwlk.h"
 #include "nspr.h"
 
 PR_BEGIN_EXTERN_C
 
 /*
@@ skipping 73 matching lines @@
     }
     rwlock->rw_reader_waitq = PZ_NewCondVar(rwlock->rw_lock);
     if (rwlock->rw_reader_waitq == NULL) {
         goto loser;
     }
     rwlock->rw_writer_waitq = PZ_NewCondVar(rwlock->rw_lock);
     if (rwlock->rw_writer_waitq == NULL) {
         goto loser;
     }
     if (lock_name != NULL) {
-        rwlock->rw_name = (char*) PR_Malloc(strlen(lock_name) + 1);
+        rwlock->rw_name = (char*) PR_Malloc((PRUint32)strlen(lock_name) + 1);
         if (rwlock->rw_name == NULL) {
             goto loser;
         }
         strcpy(rwlock->rw_name, lock_name);
     } else {
         rwlock->rw_name = NULL;
     }
     rwlock->rw_rank            = lock_rank;
     rwlock->rw_waiting_readers = 0;
     rwlock->rw_waiting_writers = 0;
@@ skipping 333 matching lines @@
             break;
     }
     /*
      * set top of stack to highest numbered empty slot
      */
     lock_stack->trs_index = new_index;
 
 }
 
 #endif  /* NSS_RWLOCK_RANK_ORDER_DEBUG */