avoid using too large integer constant without a qualifier.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac372@3645 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/dns/tests/rdata_tsig_unittest.cc

@@ -231,7 +231,7 @@ TEST_F(Rdata_TSIG_Test, createFromParams) {
                   any::TSIG(Name("hmac-sha1"), 1286779327, 300, 12,
                             fake_data, 16020, 18, 6, fake_data2)));
 
-    EXPECT_THROW(any::TSIG(Name("hmac-sha256"), 281474976710656, 300, 12,
+    EXPECT_THROW(any::TSIG(Name("hmac-sha256"), 1LLU << 48, 300, 12,
                            fake_data, 16020, 18, 6, fake_data2),
                  isc::OutOfRange);
     EXPECT_THROW(any::TSIG(Name("hmac-sha256"), 0, 300, 0, fake_data, 16020,