Add triple to CodeGenCXX/2004-03-08-ReinterpretCastCopy.cpp in MS ABI mode

I don't think we should need a triple, but this allows us to run the test
until we fix it (PR18251).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@197326 91177308-0d34-0410-b5e6-96231b3b80d8