Update NSS to 3.38

- Added HACL*Poly1305 32-bit (INRIA/Microsoft)
- Updated to final TLS 1.3 draft version (28)
- Removed TLS 1.3 prerelease draft limit check
- Removed NPN code
- Enabled dev/urandom-only RNG on Linux with NSS_SEED_ONLY_DEV_URANDOM for non-standard environments
- Fixed several bugs with TLS 1.3 negotiation
- Updated internal certificate store
- Added support for the TLS Record Size Limit Extension.
- Fixed CVE-2018-0495
- Various security fixes in the ASN.1 code.

security/nss/gtests/freebl_gtest/blake2b_unittest.cc

@@ -50,7 +50,7 @@ TEST_P(Blake2BKATUnkeyed, Unkeyed) {
 TEST_P(Blake2BKATKeyed, Keyed) {
   std::vector<uint8_t> values(BLAKE2B512_LENGTH);
   SECStatus rv = BLAKE2B_MAC_HashBuf(values.data(), kat_data.data(),
-                                     std::get<0>(GetParam()), key.data(),
+                                     std::get<0>(GetParam()), kat_key.data(),
                                      BLAKE2B_KEY_SIZE);
   ASSERT_EQ(SECSuccess, rv);
   EXPECT_EQ(values, std::get<1>(GetParam()));
@@ -139,7 +139,7 @@ TEST_F(Blake2BTests, NullTest) {
   EXPECT_EQ(std::get<1>(TestcasesUnkeyed[0]), digest);
 
   digest = std::vector<uint8_t>(BLAKE2B512_LENGTH);
-  rv = BLAKE2B_MAC_HashBuf(digest.data(), nullptr, 0, key.data(),
+  rv = BLAKE2B_MAC_HashBuf(digest.data(), nullptr, 0, kat_key.data(),
                            BLAKE2B_KEY_SIZE);
   ASSERT_EQ(SECSuccess, rv);
   EXPECT_EQ(std::get<1>(TestcasesKeyed[0]), digest);

security/nss/gtests/freebl_gtest/kat/blake2b_kat.h

@@ -7,7 +7,7 @@
 #include <vector>
 #include <stdint.h>
 
-const std::vector<uint8_t> key = {
+const std::vector<uint8_t> kat_key = {
     0,  1,  2,  3,  4,  5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15,
     16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
     32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,