Update net/third_party/nss to NSS 3.15.4.

net/third_party/nss/patches/renegoscsv.patch

Index: net/third_party/nss/patches/renegoscsv.patch
===================================================================
--- net/third_party/nss/patches/renegoscsv.patch	(revision 242942)
+++ net/third_party/nss/patches/renegoscsv.patch	(working copy)
@@ -1,15 +0,0 @@
-diff -pu a/nss/lib/ssl/ssl3con.c b/nss/lib/ssl/ssl3con.c
---- a/nss/lib/ssl/ssl3con.c	2013-07-31 12:07:10.964699464 -0700
-+++ b/nss/lib/ssl/ssl3con.c	2013-07-31 12:29:07.903829188 -0700
-@@ -4773,9 +4773,9 @@ ssl3_SendClientHello(sslSocket *ss, PRBo
-     	return SECFailure;	/* ssl3_config_match_init has set error code. */
- 
-     /* HACK for SCSV in SSL 3.0.  On initial handshake, prepend SCSV,
--     * only if we're willing to complete an SSL 3.0 handshake.
-+     * only if TLS is disabled.
-      */
--    if (!ss->firstHsDone && ss->vrange.min == SSL_LIBRARY_VERSION_3_0) {
-+    if (!ss->firstHsDone && !isTLS) {
- 	/* Must set this before calling Hello Extension Senders, 
- 	 * to suppress sending of empty RI extension.
- 	 */