clang/test/CXX/drs: Add "REQUIRES:LP64" to a couple of tests in r204033. [PR8833]

llvm-svn: 204038
diff --git a/clang/test/CXX/drs/dr412.cpp b/clang/test/CXX/drs/dr412.cpp
index a09062b..e93795b 100644
--- a/clang/test/CXX/drs/dr412.cpp
+++ b/clang/test/CXX/drs/dr412.cpp
@@ -6,6 +6,7 @@
 // lwg404: yes
 // lwg2340: yes
 
+// REQUIRES: LP64
 typedef __SIZE_TYPE__ size_t;
 namespace std { struct bad_alloc {}; }
 int x;