Update moved and dead links

src/test/bignum_tests.cpp

@@ -39,11 +39,8 @@ BOOST_AUTO_TEST_SUITE(bignum_tests)
 // stack buffer overruns.
 //
 // For more accurate diagnostics, you can use an undefined arithmetic operation
-// detector such as the clang-based tool:
-//
-// "IOC: An Integer Overflow Checker for C/C++"
-//
-// Available at: http://embed.cs.utah.edu/ioc/
+// detector such as the clang's undefined behaviour checker.
+// See also: http://clang.llvm.org/docs/UsersManual.html#controlling-code-generation
 //
 // It might also be useful to use Google's AddressSanitizer to detect
 // stack buffer overruns, which valgrind can't currently detect.

src/test/netbase_tests.cpp

@@ -93,7 +93,7 @@ BOOST_AUTO_TEST_CASE(netbase_lookupnumeric)
 
 BOOST_AUTO_TEST_CASE(onioncat_test)
 {
-    // values from http://www.cypherpunk.at/onioncat/wiki/OnionCat
+    // values from https://web.archive.org/web/20121122003543/http://www.cypherpunk.at/onioncat/wiki/OnionCat
     CNetAddr addr1("5wyqrzbvrdsumnok.onion");
     CNetAddr addr2("FD87:D87E:EB43:edb1:8e4:3588:e546:35ca");
     BOOST_CHECK(addr1 == addr2);