Try harder to get X7 defined

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149072 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/override-layout.c b/test/CodeGen/override-layout.c
index dd7e953..99c2cd6 100644
--- a/test/CodeGen/override-layout.c
+++ b/test/CodeGen/override-layout.c
@@ -136,6 +136,7 @@
   x6.b = sizeof(struct X6);
 
   struct X7 x7;
+  typedef int X7array[sizeof(struct X7)];
   x7.x = sizeof(struct X7);
   x7.y = x7.x;