Update NSS to 3.21 RTM and NSPR to 4.11 RTM

nss/lib/libpkix/pkix/store/pkix_store.c

Index: nss/lib/libpkix/pkix/store/pkix_store.c
diff --git a/nss/lib/libpkix/pkix/store/pkix_store.c b/nss/lib/libpkix/pkix/store/pkix_store.c
index 31c21ea1609495938350bb58285f853976c70973..af8be2bb2cc931bd51c53e89fec9153ea24e5449 100755
--- a/nss/lib/libpkix/pkix/store/pkix_store.c
+++ b/nss/lib/libpkix/pkix/store/pkix_store.c
@@ -74,11 +74,11 @@ pkix_CertStore_Hashcode(
                    PKIX_CERTSTOREHASHCODEFAILED);
         }
 
-        *pHashcode = (PKIX_UInt32) certStore->certCallback +
-                     (PKIX_UInt32) certStore->crlCallback +
-                     (PKIX_UInt32) certStore->certContinue +
-                     (PKIX_UInt32) certStore->crlContinue +
-                     (PKIX_UInt32) certStore->trustCallback +
+        *pHashcode = (PKIX_UInt32)((char *)certStore->certCallback - (char *)NULL) +
+                     (PKIX_UInt32)((char *)certStore->crlCallback - (char *)NULL) +
+                     (PKIX_UInt32)((char *)certStore->certContinue - (char *)NULL) +
+                     (PKIX_UInt32)((char *)certStore->crlContinue - (char *)NULL) +
+                     (PKIX_UInt32)((char *)certStore->trustCallback - (char *)NULL) +
                      (tempHash << 7);
 
 cleanup: